Help, please ! Thank you !

Logfile of HijackThis v1.99.1
Scan saved at 1:59:48 PM, on 8/16/2006
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2180)

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:\Program Files\Sygate\SPF\smc.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\system32\DRIVERS\CDANTSRV.EXE
C:\WINDOWS\system32\CTsvcCDA.exe
C:\Program Files\NavNT\defwatch.exe
C:\Program Files\NavNT\rtvscan.exe
C:\Program Files\Prevx Home\PXAgent.exe
C:\WINDOWS\ProPatches\Scheduler\stSchedEx.exe
C:\WINDOWS\system32\svchost.exe
C:\Program Files\Webroot\Spy Sweeper\WRSSSDK.exe
C:\Program Files\UPHClean\uphclean.exe
C:\WINDOWS\system32\MsPMSPSv.exe
C:\Program Files\Raxco\PerfectDisk\PDSched.exe
C:\WINDOWS\system32\MsgSys.EXE
C:\WINDOWS\Explorer.EXE
C:\Program Files\NavNT\vptray.exe
C:\Program Files\Spybot - Search & Destroy\TeaTimer.exe
C:\Program Files\SpywareGuard\sgmain.exe
C:\WINDOWS\system32\SK2690DM.EXE
C:\Program Files\CA\eTrust PestPatrol\PPActiveDetection.exe
C:\Program Files\Webroot\Spy Sweeper\SpySweeper.exe
C:\Program Files\Logitech\MouseWare\system\em_exec.exe
C:\Program Files\SpywareGuard\sgbhp.exe
C:\Program Files\Mozilla Firefox\firefox.exe
C:\Documents and Settings\vladaudio\Desktop\Protect\HijackThis\HijackThis.exe

O2 - BHO: SpywareGuard Download Protection - {4A368E80-174F-4872-96B5-0B27DDD11DB2} - C:\Program Files\SpywareGuard\dlprotect.dll
O2 - BHO: (no name) - {53707962-6F74-2D53-2644-206D7942484F} - C:\PROGRA~1\SPYBOT~1\SDHelper.dll
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files\Java\jre1.5.0_07\bin\ssv.dll
O3 - Toolbar: Yahoo! Toolbar - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\Program Files\Yahoo!\Companion\Installs\cpn\yt.dll
O4 - HKLM\..\Run: [vptray] C:\Program Files\NavNT\vptray.exe
O4 - HKLM\..\Run: [SmcService] C:\PROGRA~1\Sygate\SPF\smc.exe -startgui
O4 - HKLM\..\Run: [SpybotSD TeaTimer] C:\Program Files\Spybot - Search & Destroy\TeaTimer.exe
O4 - HKLM\..\Run: [SpywareGuard] C:\Program Files\SpywareGuard\sgmain.exe
O4 - HKLM\..\Run: [Hot Key Kbd 2690 Daemon] SK2690DM.EXE
O4 - HKLM\..\Run: [eTrustPPAP] "C:\Program Files\CA\eTrust PestPatrol\PPActiveDetection.exe"
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE C:\WINDOWS\system32\NvCpl.dll,NvStartup
O4 - HKLM\..\Run: [SpySweeper] "C:\Program Files\Webroot\Spy Sweeper\SpySweeper.exe" /startintray
O4 - HKLM\..\Run: [Logitech Utility] Logi_MwX.Exe
O8 - Extra context menu item: E&xport to Microsoft Excel - res://C:\PROGRA~1\MICROS~2\OFFICE11\EXCEL.EXE/3000
O8 - Extra context menu item: Open Link Target in Firefox - file://C:\Documents and Settings\vladaudio\Application Data\Mozilla\Firefox\Profiles\u6ij8874.default\extensions\{5D558C43-550F-4b12-84AB-0D8ABDA9F975}\firefoxviewlink.html
O8 - Extra context menu item: View This Page in Firefox - file://C:\Documents and Settings\vladaudio\Application Data\Mozilla\Firefox\Profiles\u6ij8874.default\extensions\{5D558C43-550F-4b12-84AB-0D8ABDA9F975}\firefoxviewpage.html
O9 - Extra button: Research - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~2\OFFICE11\REFIEBAR.DLL
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - http://update.microsoft.com/windowsupdate/…b?1149859044216
O16 - DPF: {6E32070A-766D-4EE6-879C-DC1FA91D2FC3} (MUWebControl Class) - http://update.microsoft.com/microsoftupdat…b?1150288564609
O17 - HKLM\System\CCS\Services\Tcpip\..\{6BCD2AFF-1372-416B-8259-C9F80ED164E3}: NameServer = 89.32.50.50,193.226.128.1
O20 - Winlogon Notify: NavLogon - C:\WINDOWS\system32\NavLogon.dll
O20 - Winlogon Notify: WRNotifier - C:\WINDOWS\SYSTEM32\WRLogonNTF.dll
O23 - Service: C-DillaSrv - C-Dilla Ltd - C:\WINDOWS\system32\DRIVERS\CDANTSRV.EXE
O23 - Service: Creative Service for CDROM Access - Creative Technology Ltd - C:\WINDOWS\system32\CTsvcCDA.exe
O23 - Service: DefWatch - Symantec Corporation - C:\Program Files\NavNT\defwatch.exe
O23 - Service: InCD Helper (InCDsrv) - Nero AG - C:\Program Files\Nero\Nero 7\InCD\InCDsrv.exe
O23 - Service: Norton AntiVirus Client (Norton AntiVirus Server) - Symantec Corporation - C:\Program Files\NavNT\rtvscan.exe
O23 - Service: NVIDIA Display Driver Service (NVSvc) - NVIDIA Corporation - C:\WINDOWS\system32\nvsvc32.exe
O23 - Service: PDEngine - Raxco Software, Inc. - C:\Program Files\Raxco\PerfectDisk\PDEngine.exe
O23 - Service: PDScheduler (PDSched) - Raxco Software, Inc. - C:\Program Files\Raxco\PerfectDisk\PDSched.exe
O23 - Service: Prevx Agent (PrevxAgent) - Unknown owner - C:\Program Files\Prevx Home\PXAgent.exe" -f (file missing)
O23 - Service: Sandra Data Service (SandraDataSrv) - SiSoftware - C:\Program Files\SiSoftware\SiSoftware Sandra Pro Home 2007\Win32\RpcDataSrv.exe
O23 - Service: Sandra Service (SandraTheSrv) - SiSoftware - C:\Program Files\SiSoftware\SiSoftware Sandra Pro Home 2007\RpcSandraSrv.exe
O23 - Service: Shavlik Remote Scheduler Service (Shavlik Scheduler) - Shavlik Technologies - C:\WINDOWS\ProPatches\Scheduler\stSchedEx.exe
O23 - Service: Sygate Personal Firewall (SmcService) - Sygate Technologies, Inc. - C:\Program Files\Sygate\SPF\smc.exe
O23 - Service: Webroot Spy Sweeper Engine (svcWRSSSDK) - Webroot Software, Inc. - C:\Program Files\Webroot\Spy Sweeper\WRSSSDK.exe