Trojan Not Removed

hello all,
i have this old system that runs on XP. No service pack installed. It turns out I got infected by some trojan and whatever else. Nasty effects is not able to save my word document after 20mn or so, unexpected reboot and so forth. I followed all instructions related to cleaning my pc.
I installed other software (kaspersky, spysweeper). Kaspersky tells me that I am still infected by the rootkit.Win32.Agtent.gk trojan. Some other time it says it is a trojan of the same kind exept it varis on .bc or .ec etc.
The file that connot be disinfected is lanmadrv.sys
Removing it makes it come back after each reboot.
After days of running as many software in many ways as my patience goes I am asking your expertise.
Thank you for your help.

Here is my hijackThis report before and after the cleanup (the latter made in safe mode per your instructions).


HijackThis BEFORE CLEANUP:
———————————
Logfile of HijackThis v1.99.1
Scan saved at 8:49:34 AM, on 6/28/2007
Platform: Windows XP (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 (6.00.2600.0000)

Running processes:
C:\WINDOWS\System32\smss.exe
C:\WINDOWS\system32\winlogon.exe
C:\WINDOWS\system32\services.exe
C:\WINDOWS\system32\lsass.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\logonui.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\Explorer.EXE
C:\PROGRA~1\Yahoo!\browser\ybrwicon.exe
C:\Program Files\Visual Networks\Visual IP InSight\SBC\IPClient.exe
C:\Program Files\Visual Networks\Visual IP InSight\SBC\IPMon32.exe
C:\PROGRA~1\Yahoo!\YOP\yop.exe
C:\WINDOWS\SYSTEM32\USRmlnkA.exe
C:\Program Files\CyberLink\PowerDVD\PDVDServ.exe
C:\PROGRA~1\SBCSEL~1\SMARTB~1\MotiveSB.exe
C:\Program Files\ahead\InCD\InCD.exe
C:\Program Files\Kaspersky Lab\Kaspersky Anti-Virus 6.0\avp.exe
C:\Program Files\Messenger\msmsgs.exe
C:\Program Files\SpyBro\SpyBro.exe
C:\Program Files\Sierra\Planner\PLNRnote.exe
C:\WINDOWS\SYSTEM32\USRshutA.exe
C:\WINDOWS\SYSTEM32\USRmlnkA.exe
C:\WINDOWS\System32\qmponibe.exe
C:\PROGRA~1\Yahoo!\browser\YCOMMON.EXE
C:\Program Files\SBC Self Support Tool\bin\mpbtn.exe
C:\Program Files\Ad-Aware 2007\aawservice.exe
C:\Program Files\Kaspersky Lab\Kaspersky Anti-Virus 6.0\avp.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Spy Sweeper\SpySweeper.exe
C:\WINDOWS\System32\devldr32.exe
C:\PROGRA~1\kauav\CLAMCO~1.EXE
C:\WINDOWS\System32\wuauclt.exe
C:\PROGRA~1\Yahoo!\browser\ybrowser.exe
C:\Program Files\Hijackthis\HijackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = http://red.clientapps.yahoo.com/customize/…/search/ie.html
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = http://red.clientapps.yahoo.com/customize/…//www.yahoo.com
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://yahoo.com/
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://yahoo.sbc.com/dsl
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://red.clientapps.yahoo.com/customize/…//www.yahoo.com
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Bar = http://red.clientapps.yahoo.com/customize/…/search/ie.html
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = http://red.clientapps.yahoo.com/customize/…//www.yahoo.com
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://yahoo.sbc.com/dsl
R1 - HKCU\Software\Microsoft\Internet Explorer\SearchURL,(Default) = http://red.clientapps.yahoo.com/customize/…//www.yahoo.com
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyOverride = 127.0.0.1
R3 - URLSearchHook: Yahoo! Toolbar - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Program Files\Yahoo!\Common\Companion\Installs\cpn\yt.dll
O2 - BHO: Yahoo! Toolbar Helper - {02478D38-C3F9-4EFB-9B51-7695ECA05670} - C:\Program Files\Yahoo!\Common\Companion\Installs\cpn\yt.dll
O2 - BHO: Adobe PDF Reader Link Helper - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 7.0\ActiveX\AcroIEHelper.dll
O2 - BHO: Yahoo! IE Services Button - {5BAB4B5B-68BC-4B02-94D6-2FC0DE4A7897} - C:\PROGRA~1\Yahoo!\Common\yiesrvc.dll
O2 - BHO: EpsonToolBandKicker Class - {E99421FB-68DD-40F0-B4AC-B7027CAE2F1A} - C:\Program Files\EPSON\EPSON Web-To-Page\EPSON Web-To-Page.dll
O2 - BHO: SidebarAutoLaunch Class - {F2AA9440-6328-4933-B7C9-A6CCDF9CBF6D} - C:\Program Files\Yahoo!\browser\YSidebarIEBHO.dll
O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINDOWS\System32\msdxm.ocx
O3 - Toolbar: Yahoo! Toolbar - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Program Files\Yahoo!\Common\Companion\Installs\cpn\yt.dll
O3 - Toolbar: EPSON Web-To-Page - {EE5D279F-081B-4404-994D-C6B60AAEBA6D} - C:\Program Files\EPSON\EPSON Web-To-Page\EPSON Web-To-Page.dll
O4 - HKLM\..\Run: [YBrowser] C:\PROGRA~1\Yahoo!\browser\ybrwicon.exe
O4 - HKLM\..\Run: [IPInSightLAN 02] "C:\Program Files\Visual Networks\Visual IP InSight\SBC\IPClient.exe" -l
O4 - HKLM\..\Run: [IPInSightMonitor 02] "C:\Program Files\Visual Networks\Visual IP InSight\SBC\IPMon32.exe"
O4 - HKLM\..\Run: [YOP] "C:\PROGRA~1\Yahoo!\YOP\yop.exe" /autostart
O4 - HKLM\..\Run: [USRpdA] "C:\WINDOWS\SYSTEM32\USRmlnkA.exe" RunServices \Device\3cpipe-USRpdA
O4 - HKLM\..\Run: [RemoteControl] "C:\Program Files\CyberLink\PowerDVD\PDVDServ.exe"
O4 - HKLM\..\Run: [NeroCheck] C:\WINDOWS\System32\NeroCheck.exe
O4 - HKLM\..\Run: [Motive SmartBridge] C:\PROGRA~1\SBCSEL~1\SMARTB~1\MotiveSB.exe
O4 - HKLM\..\Run: [InCD] "C:\Program Files\ahead\InCD\InCD.exe"
O4 - HKLM\..\Run: [lanmanwrk.exe] C:\WINDOWS\System32\lanmanwrk.exe
O4 - HKLM\..\Run: [AVP] "C:\Program Files\Kaspersky Lab\Kaspersky Anti-Virus 6.0\avp.exe"
O4 - HKCU\..\Run: [WinMedia] svchost
O4 - HKCU\..\Run: [Yahoo! Pager] 1
O4 - HKCU\..\Run: [MSMSGS] "C:\Program Files\Messenger\msmsgs.exe" /background
O4 - HKCU\..\Run: [SpyBrowser] "C:\Program Files\SpyBro\SpyBro.exe" /autostart
O4 - Global Startup: Adobe Reader Speed Launch.lnk = C:\Program Files\Adobe\Acrobat 7.0\Reader\reader_sl.exe
O4 - Global Startup: AT&T Self Support Tool.lnk = C:\Program Files\SBC Self Support Tool\bin\matcli.exe
O4 - Global Startup: Event Planner Reminders.lnk = C:\Program Files\Sierra\Planner\PLNRnote.exe
O4 - Global Startup: Forget Me Not.lnk = C:\Program Files\Broderbund\AG CreataCard\AGRemind.exe
O4 - Global Startup: Microsoft Office.lnk = C:\Program Files\Microsoft Office\Office10\OSA.EXE
O8 - Extra context menu item: E&xport to Microsoft Excel - res://C:\PROGRA~1\MICROS~2\Office10\EXCEL.EXE/3000
O9 - Extra button: Web Anti-Virus statistics - {1F460357-8A94-4D71-9CA3-AA4ACF32ED8E} - C:\Program Files\Kaspersky Lab\Kaspersky Anti-Virus 6.0\scieplugin.dll
O9 - Extra button: AT&T Yahoo! Services - {5BAB4B5B-68BC-4B02-94D6-2FC0DE4A7897} - C:\PROGRA~1\Yahoo!\Common\yiesrvc.dll
O16 - DPF: {2BC66F54-93A8-11D3-BEB6-00105AA9B6AE} (Symantec AntiVirus scanner) - http://security.symantec.com/sscv6/SharedC…bin/AvSniff.cab
O16 - DPF: {644E432F-49D3-41A1-8DD5-E099162EEEC5} (Symantec RuFSI Utility Class) - http://security.symantec.com/sscv6/SharedC…n/bin/cabsa.cab
O20 - Winlogon Notify: klogon - C:\WINDOWS\System32\klogon.dll
O20 - Winlogon Notify: WRNotifier - C:\WINDOWS\SYSTEM32\WRLogonNTF.dll
O23 - Service: Ad-Aware 2007 Service (aawservice) - Lavasoft AB - C:\Program Files\Ad-Aware 2007\aawservice.exe
O23 - Service: AVP - Unknown owner - C:\Program Files\Kaspersky Lab\Kaspersky Anti-Virus 6.0\avp.exe" -r (file missing)
O23 - Service: Webroot Spy Sweeper Engine (WebrootSpySweeperService) - Webroot Software, Inc. - C:\Program Files\Spy Sweeper\SpySweeper.exe


HijackThis AFTER CLEANUP:
———————————
Logfile of HijackThis v1.99.1
Scan saved at 1:23:35 PM, on 6/28/2007
Platform: Windows XP (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 (6.00.2600.0000)

Running processes:
C:\WINDOWS\System32\smss.exe
C:\WINDOWS\system32\winlogon.exe
C:\WINDOWS\system32\services.exe
C:\WINDOWS\system32\lsass.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\logonui.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\Explorer.EXE
C:\PROGRA~1\Yahoo!\browser\ybrwicon.exe
C:\Program Files\Visual Networks\Visual IP InSight\SBC\IPClient.exe
C:\Program Files\Visual Networks\Visual IP InSight\SBC\IPMon32.exe
C:\PROGRA~1\Yahoo!\YOP\yop.exe
C:\WINDOWS\SYSTEM32\USRmlnkA.exe
C:\Program Files\CyberLink\PowerDVD\PDVDServ.exe
C:\PROGRA~1\SBCSEL~1\SMARTB~1\MotiveSB.exe
C:\Program Files\Ad-Aware 2007\aawservice.exe
C:\Program Files\ahead\InCD\InCD.exe
C:\Program Files\AVG Anti-Spyware\guard.exe
C:\Program Files\Kaspersky Lab\Kaspersky Anti-Virus 6.0\avp.exe
C:\Program Files\AVG Anti-Spyware\avgas.exe
C:\PROGRA~1\Yahoo!\browser\YCOMMON.EXE
C:\Program Files\Messenger\msmsgs.exe
C:\Program Files\Adobe\Acrobat 7.0\Reader\reader_sl.exe
C:\WINDOWS\SYSTEM32\USRshutA.exe
C:\WINDOWS\SYSTEM32\USRmlnkA.exe
C:\Program Files\Sierra\Planner\PLNRnote.exe
C:\Program Files\Kaspersky Lab\Kaspersky Anti-Virus 6.0\avp.exe
C:\WINDOWS\System32\msiexec.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Spy Sweeper\SpySweeper.exe
C:\Program Files\SBC Self Support Tool\bin\mpbtn.exe
C:\WINDOWS\System32\wuauclt.exe
C:\WINDOWS\System32\devldr32.exe
C:\WINDOWS\System32\wuauclt.exe
C:\Program Files\Hijackthis\HijackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = http://red.clientapps.yahoo.com/customize/…/search/ie.html
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = http://red.clientapps.yahoo.com/customize/…//www.yahoo.com
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://yahoo.com/
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://yahoo.sbc.com/dsl
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://red.clientapps.yahoo.com/customize/…//www.yahoo.com
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Bar = http://red.clientapps.yahoo.com/customize/…/search/ie.html
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = http://red.clientapps.yahoo.com/customize/…//www.yahoo.com
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://yahoo.sbc.com/dsl
R1 - HKCU\Software\Microsoft\Internet Explorer\SearchURL,(Default) = http://red.clientapps.yahoo.com/customize/…//www.yahoo.com
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyOverride = 127.0.0.1
R3 - URLSearchHook: Yahoo! Toolbar - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Program Files\Yahoo!\Common\Companion\Installs\cpn\yt.dll
O2 - BHO: Yahoo! Toolbar Helper - {02478D38-C3F9-4EFB-9B51-7695ECA05670} - C:\Program Files\Yahoo!\Common\Companion\Installs\cpn\yt.dll
O2 - BHO: Adobe PDF Reader Link Helper - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 7.0\ActiveX\AcroIEHelper.dll
O2 - BHO: Yahoo! IE Services Button - {5BAB4B5B-68BC-4B02-94D6-2FC0DE4A7897} - C:\PROGRA~1\Yahoo!\Common\yiesrvc.dll
O2 - BHO: EpsonToolBandKicker Class - {E99421FB-68DD-40F0-B4AC-B7027CAE2F1A} - C:\Program Files\EPSON\EPSON Web-To-Page\EPSON Web-To-Page.dll
O2 - BHO: SidebarAutoLaunch Class - {F2AA9440-6328-4933-B7C9-A6CCDF9CBF6D} - C:\Program Files\Yahoo!\browser\YSidebarIEBHO.dll
O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINDOWS\System32\msdxm.ocx
O3 - Toolbar: Yahoo! Toolbar - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Program Files\Yahoo!\Common\Companion\Installs\cpn\yt.dll
O3 - Toolbar: EPSON Web-To-Page - {EE5D279F-081B-4404-994D-C6B60AAEBA6D} - C:\Program Files\EPSON\EPSON Web-To-Page\EPSON Web-To-Page.dll
O4 - HKLM\..\Run: [YBrowser] C:\PROGRA~1\Yahoo!\browser\ybrwicon.exe
O4 - HKLM\..\Run: [IPInSightLAN 02] "C:\Program Files\Visual Networks\Visual IP InSight\SBC\IPClient.exe" -l
O4 - HKLM\..\Run: [IPInSightMonitor 02] "C:\Program Files\Visual Networks\Visual IP InSight\SBC\IPMon32.exe"
O4 - HKLM\..\Run: [YOP] "C:\PROGRA~1\Yahoo!\YOP\yop.exe" /autostart
O4 - HKLM\..\Run: [USRpdA] "C:\WINDOWS\SYSTEM32\USRmlnkA.exe" RunServices \Device\3cpipe-USRpdA
O4 - HKLM\..\Run: [RemoteControl] "C:\Program Files\CyberLink\PowerDVD\PDVDServ.exe"
O4 - HKLM\..\Run: [NeroCheck] C:\WINDOWS\System32\NeroCheck.exe
O4 - HKLM\..\Run: [Motive SmartBridge] C:\PROGRA~1\SBCSEL~1\SMARTB~1\MotiveSB.exe
O4 - HKLM\..\Run: [InCD] "C:\Program Files\ahead\InCD\InCD.exe"
O4 - HKCU\..\Run: [Yahoo! Pager] 1
O4 - HKCU\..\Run: [MSMSGS] "C:\Program Files\Messenger\msmsgs.exe" /background
O4 - HKCU\..\Run: [SpyBrowser] "C:\Program Files\SpyBro\SpyBro.exe" /autostart
O4 - Global Startup: Adobe Reader Speed Launch.lnk = C:\Program Files\Adobe\Acrobat 7.0\Reader\reader_sl.exe
O4 - Global Startup: AT&T Self Support Tool.lnk = C:\Program Files\SBC Self Support Tool\bin\matcli.exe
O4 - Global Startup: Event Planner Reminders.lnk = C:\Program Files\Sierra\Planner\PLNRnote.exe
O4 - Global Startup: Forget Me Not.lnk = C:\Program Files\Broderbund\AG CreataCard\AGRemind.exe
O4 - Global Startup: Microsoft Office.lnk = C:\Program Files\Microsoft Office\Office10\OSA.EXE
O8 - Extra context menu item: E&xport to Microsoft Excel - res://C:\PROGRA~1\MICROS~2\Office10\EXCEL.EXE/3000
O9 - Extra button: Web Anti-Virus statistics - {1F460357-8A94-4D71-9CA3-AA4ACF32ED8E} - C:\Program Files\Kaspersky Lab\Kaspersky Anti-Virus 6.0\scieplugin.dll
O9 - Extra button: AT&T Yahoo! Services - {5BAB4B5B-68BC-4B02-94D6-2FC0DE4A7897} - C:\PROGRA~1\Yahoo!\Common\yiesrvc.dll
O16 - DPF: {2BC66F54-93A8-11D3-BEB6-00105AA9B6AE} (Symantec AntiVirus scanner) - http://security.symantec.com/sscv6/SharedC…bin/AvSniff.cab
O16 - DPF: {644E432F-49D3-41A1-8DD5-E099162EEEC5} (Symantec RuFSI Utility Class) - http://security.symantec.com/sscv6/SharedC…n/bin/cabsa.cab
O20 - Winlogon Notify: klogon - C:\WINDOWS\System32\klogon.dll
O20 - Winlogon Notify: WRNotifier - C:\WINDOWS\SYSTEM32\WRLogonNTF.dll
O23 - Service: Ad-Aware 2007 Service (aawservice) - Lavasoft AB - C:\Program Files\Ad-Aware 2007\aawservice.exe
O23 - Service: AVG Anti-Spyware Guard - GRISOFT s.r.o. - C:\Program Files\AVG Anti-Spyware\guard.exe
O23 - Service: AVP - Unknown owner - C:\Program Files\Kaspersky Lab\Kaspersky Anti-Virus 6.0\avp.exe" -r (file missing)
O23 - Service: Webroot Spy Sweeper Engine (WebrootSpySweeperService) - Webroot Software, Inc. - C:\Program Files\Spy Sweeper\SpySweeper.exe