Even non-internet programs weren't working anymore. Outlook would never close, or even my pc security programs would never load at all. So eventually, I managed to get my AVG Anti-Spyware program to run and scan, and it came up with typical trackers and such, but it also had a trojan.Kill.av? (I think that's what it was).
After deleting all the carp**, my computer's been working completely fine, until tonight.

My husband logged into his user account and went online, and within minutes, the same thing started happening. Only, then, when I went back to my user account, it was no longer "fixed" and was freezing and such.
I'm not sure I have the latest HJT, but I went ahead and made a log for you:
Logfile of HijackThis v1.99.1
Scan saved at 8:44:51 PM, on 3/15/2007
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v7.00 (7.00.6000.16414)
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\spoolsv.exe
C:\WINDOWS\Explorer.EXE
C:\PROGRA~1\Grisoft\AVG7\avgamsvr.exe
C:\PROGRA~1\Grisoft\AVG7\avgupsvc.exe
C:\WINDOWS\System32\svchost.exe
C:\WINDOWS\system32\hkcmd.exe
C:\WINDOWS\BCMSMMSG.exe
C:\Program Files\Synaptics\SynTP\SynTPLpr.exe
C:\Program Files\Synaptics\SynTP\SynTPEnh.exe
C:\Program Files\Dell\AccessDirect\dadapp.exe
C:\WINDOWS\System32\DSentry.exe
C:\WINDOWS\system32\dla\tfswctrl.exe
C:\WINDOWS\System32\spool\drivers\w32x86\3\hpztsb03.exe
C:\WINDOWS\SM1BG.EXE
C:\PROGRA~1\Grisoft\AVG7\avgcc.exe
C:\Program Files\BillP Studios\WinPatrol\winpatrol.exe
C:\Program Files\QuickTime\qttask.exe
C:\Program Files\iTunes\iTunesHelper.exe
C:\Program Files\Lexmark 2300 Series\ezprint.exe
C:\Program Files\Java\jre1.5.0_11\bin\jusched.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Program Files\MSN Messenger\MsnMsgr.Exe
C:\Program Files\SpywareGuard\sgmain.exe
C:\Program Files\SpywareGuard\sgbhp.exe
C:\Program Files\iPod\bin\iPodService.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Internet Explorer\iexplore.exe
C:\Documents and Settings\Maren\Desktop\HijackThis.exe
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://www.dell4me.com/myway
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://go.microsoft....k/?LinkId=69157
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL = http://go.microsoft....k/?LinkId=54896
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = http://go.microsoft....k/?LinkId=54896
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://go.microsoft....k/?LinkId=69157
O2 - BHO: Adobe PDF Reader Link Helper - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 7.0\ActiveX\AcroIEHelper.dll
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: DriveLetterAccess - {5CA3D70E-1895-11CF-8E15-001234567890} - C:\WINDOWS\system32\dla\tfswshx.dll
O2 - BHO: SSVHelper Class - {761497BB-D6F0-462C-B6EB-D4DAF1D92D43} - C:\Program Files\Java\jre1.5.0_11\bin\ssv.dll
O2 - BHO: (no name) - {FDD3B846-8D59-4ffb-8758-209B6AD74ACC} - (no file)
O4 - HKLM\..\Run: [IgfxTray] C:\WINDOWS\system32\igfxtray.exe
O4 - HKLM\..\Run: [HotKeysCmds] C:\WINDOWS\system32\hkcmd.exe
O4 - HKLM\..\Run: [BCMSMMSG] BCMSMMSG.exe
O4 - HKLM\..\Run: [SynTPLpr] "C:\Program Files\Synaptics\SynTP\SynTPLpr.exe"
O4 - HKLM\..\Run: [SynTPEnh] "C:\Program Files\Synaptics\SynTP\SynTPEnh.exe"
O4 - HKLM\..\Run: [DadApp] "C:\Program Files\Dell\AccessDirect\dadapp.exe"
O4 - HKLM\..\Run: [DVDSentry] C:\WINDOWS\System32\DSentry.exe
O4 - HKLM\..\Run: [dla] C:\WINDOWS\system32\dla\tfswctrl.exe
O4 - HKLM\..\Run: [UpdateManager] "C:\Program Files\Common Files\Sonic\Update Manager\sgtray.exe" /r
O4 - HKLM\..\Run: [HPDJ Taskbar Utility] C:\WINDOWS\System32\spool\drivers\w32x86\3\hpztsb03.exe
O4 - HKLM\..\Run: [SM1BG] C:\WINDOWS\SM1BG.EXE
O4 - HKLM\..\Run: [AVG7_CC] C:\PROGRA~1\Grisoft\AVG7\avgcc.exe /STARTUP
O4 - HKLM\..\Run: [WinPatrol] "C:\Program Files\BillP Studios\WinPatrol\winpatrol.exe"
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [iTunesHelper] "C:\Program Files\iTunes\iTunesHelper.exe"
O4 - HKLM\..\Run: [LXCGCATS] rundll32 C:\WINDOWS\System32\spool\DRIVERS\W32X86\3\LXCGtime.dll,_RunDLLEntry@16
O4 - HKLM\..\Run: [lxcgmon.exe] "C:\Program Files\Lexmark 2300 Series\lxcgmon.exe"
O4 - HKLM\..\Run: [EzPrint] "C:\Program Files\Lexmark 2300 Series\ezprint.exe"
O4 - HKLM\..\Run: [SunJavaUpdateSched] "C:\Program Files\Java\jre1.5.0_11\bin\jusched.exe"
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [MsnMsgr] "C:\Program Files\MSN Messenger\MsnMsgr.Exe" /background
O4 - Startup: SpywareGuard.lnk = C:\Program Files\SpywareGuard\sgmain.exe
O8 - Extra context menu item: E&xport to Microsoft Excel - res://C:\PROGRA~1\MICROS~4\OFFICE11\EXCEL.EXE/3000
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.5.0_11\bin\ssv.dll
O9 - Extra 'Tools' menuitem: Sun Java Console - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.5.0_11\bin\ssv.dll
O9 - Extra button: (no name) - {85d1f590-48f4-11d9-9669-0800200c9a66} - %windir%\bdoscandel.exe (file missing)
O9 - Extra 'Tools' menuitem: Uninstall BitDefender Online Scanner v8 - {85d1f590-48f4-11d9-9669-0800200c9a66} - %windir%\bdoscandel.exe (file missing)
O9 - Extra button: Research - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~4\OFFICE11\REFIEBAR.DLL
O9 - Extra button: Real.com - {CD67F990-D8E9-11d2-98FE-00C0F0318AFE} - C:\WINDOWS\System32\Shdocvw.dll
O9 - Extra button: (no name) - {e2e2dd38-d088-4134-82b7-f2ba38496583} - %windir%\Network Diagnostic\xpnetdiag.exe (file missing)
O9 - Extra 'Tools' menuitem: @xpsp3res.dll,-20001 - {e2e2dd38-d088-4134-82b7-f2ba38496583} - %windir%\Network Diagnostic\xpnetdiag.exe (file missing)
O9 - Extra button: Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O9 - Extra 'Tools' menuitem: Windows Messenger - {FB5F1910-F110-11d2-BB9E-00C04F795683} - C:\Program Files\Messenger\msmsgs.exe
O11 - Options group: [INTERNATIONAL] International*
O16 - DPF: {04E214E5-63AF-4236-83C6-A7ADCBF9BD02} (HouseCall Control) - http://housecall60.t...all/xscan60.cab
O16 - DPF: {05CA9FB0-3E3E-4B36-BF41-0E3A5CAA8CD8} (Office Genuine Advantage Validation Tool) - http://go.microsoft....k/?linkid=58813
O16 - DPF: {05D44720-58E3-49E6-BDF6-D00330E511D3} (StagingUI Object) - http://zone.msn.com/...UI.cab46479.cab
O16 - DPF: {2042B57E-6336-459E-B7CE-2A0F6C9E6AF8} (IEPlayInterface Class) - http://www.lotrdvd.c...ds/iaieplay.dll
O16 - DPF: {2C8EEB84-6D60-11D4-BD64-0050048A82BF} (eshare communications NetAgent Customer ActiveX Control version 2) - http://billing-a.mhi...s/custappx2.CAB
O16 - DPF: {3BB54395-5982-4788-8AF4-B5388FFDD0D8} (ZoneBuddy Class) - http://zone.msn.com/...dy.cab32846.cab
O16 - DPF: {406B5949-7190-4245-91A9-30A17DE16AD0} (Snapfish Activia) - http://www.yorkphoto...YorkActivia.cab
O16 - DPF: {5736C456-EA94-4AAC-BB08-917ABDD035B3} (ZonePAChat Object) - http://zone.msn.com/...at.cab32846.cab
O16 - DPF: {5D86DDB5-BDF9-441B-9E9E-D4730F4EE499} (BDSCANONLINE Control) - http://www.bitdefend...can8/oscan8.cab
O16 - DPF: {6E32070A-766D-4EE6-879C-DC1FA91D2FC3} (MUWebControl Class) - http://update.micros...b?1128035178032
O16 - DPF: {7E980B9B-8AE5-466A-B6D6-DA8CF814E78A} (MJLauncherCtrl Class) - http://zone.msn.com/...mjolauncher.cab
O16 - DPF: {8E28B3A9-FE83-45D1-B657-D5426B81A121} (CustomerCtrl Class) - http://cs8b.instants...erxsigned42.cab
O16 - DPF: {917623D1-D8E5-11D2-BE8B-00104B06BDE3} (CamImage Class) - http://kookshop.tv/AxisCamControl.ocx
O16 - DPF: {95B5D20C-BD31-4489-8ABF-F8C8BE748463} (ZPA_HRTZ Object) - http://zone.msn.com/...tz.cab40641.cab
O16 - DPF: {9A9307A0-7DA4-4DAF-B042-5009F29E09E1} (ActiveScan Installer Class) - http://www.pandasoft...free/asinst.cab
O16 - DPF: {A82C3A33-5C0E-466C-B020-71585433A7E4} (PhxStudent.OeSetup15) - https://mycampus.pho...hxStudent15.CAB
O16 - DPF: {A93D84FD-641F-43AE-B963-E6FA84BE7FE7} (LinkSys Content Update) - http://www.linksysfi...ll/gtdownls.cab
O16 - DPF: {B8BE5E93-A60C-4D26-A2DC-220313175592} (ZoneIntro Class) - http://cdn2.zone.msn...ro.cab34246.cab
O16 - DPF: {D27CDB6E-AE6D-11CF-96B8-444553540000} (Shockwave Flash Object) - http://fpdownload2.m...ash/swflash.cab
O16 - DPF: {D719897A-B07A-4C0C-AEA9-9B663A28DFCB} (iTunesDetector Class) - http://ax.phobos.app.../ITDetector.cab
O16 - DPF: {DA2AA6CF-5C7A-4B71-BC3B-C771BB369937} (StadiumProxy Class) - http://zone.msn.com/...xy.cab41227.cab
O16 - DPF: {E5D419D6-A846-4514-9FAD-97E826C84822} (HeartbeatCtl Class) - http://fdl.msn.com/z...s/heartbeat.cab
O16 - DPF: {FF3C5A9F-5A91-4930-80E8-4709194C2AD3} (CheckersZPA Object) - http://zone.msn.com/...PA.cab40641.cab
O18 - Protocol: livecall - {828030A1-22C1-4009-854F-8E305202313F} - C:\PROGRA~1\MSNMES~1\MSGRAP~1.DLL
O18 - Protocol: msnim - {828030A1-22C1-4009-854F-8E305202313F} - C:\PROGRA~1\MSNMES~1\MSGRAP~1.DLL
O20 - Winlogon Notify: igfxcui - C:\WINDOWS\SYSTEM32\igfxsrvc.dll
O20 - Winlogon Notify: WgaLogon - C:\WINDOWS\SYSTEM32\WgaLogon.dll
O20 - Winlogon Notify: WRNotifier - WRLogonNTF.dll (file missing)
O21 - SSODL: WPDShServiceObj - {AAA288BA-9A4C-45B0-95D7-94D524869DB5} - C:\WINDOWS\system32\WPDShServiceObj.dll
O23 - Service: Adobe LM Service - Adobe Systems - C:\Program Files\Common Files\Adobe Systems Shared\Service\Adobelmsvc.exe
O23 - Service: AVG7 Alert Manager Server (Avg7Alrt) - GRISOFT, s.r.o. - C:\PROGRA~1\Grisoft\AVG7\avgamsvr.exe
O23 - Service: AVG7 Update Service (Avg7UpdSvc) - GRISOFT, s.r.o. - C:\PROGRA~1\Grisoft\AVG7\avgupsvc.exe
O23 - Service: InstallDriver Table Manager (IDriverT) - Macrovision Corporation - C:\Program Files\Common Files\InstallShield\Driver\11\Intel 32\IDriverT.exe
O23 - Service: iPod Service - Apple Computer, Inc. - C:\Program Files\iPod\bin\iPodService.exe
Help...please?!?!?! My husband is driving me NUTS because he needs the computer for his class....