Here is my update:
I disabled system restore, rebooted and did another preboot scan, and my computer didn't claim to find anymore viruses. After rebooting again, it started to find 30-40 more infections immediately. I'm now not able to get any kind of internet connection on this machine, and so I have had to switch to a different computer in order to post this, and download what you suggested.
I installed all of the extra software you suggested, did all the spyware immunizations, ran the rootkit intensive scan (nothing came up), and ran the hijackthis log, here it is:
Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 1:37:02 PM, on 11/8/2007
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v7.00 (7.00.6000.16473)
Boot mode: Normal
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\Alwil Software\Avast4\aswUpdSv.exe
C:\Program Files\Alwil Software\Avast4\ashServ.exe
C:\WINDOWS\system32\spoolsv.exe
C:\WINDOWS\Explorer.EXE
C:\WINDOWS\system32\hkcmd.exe
C:\WINDOWS\system32\igfxpers.exe
C:\WINDOWS\system32\rundll32.exe
C:\WINDOWS\system32\IRW.exe
C:\Program Files\Apple Keyboard Support\KbdMgr.exe
C:\WINDOWS\system32\Brightness.exe
C:\Program Files\Microsoft Office\Office12\GrooveMonitor.exe
C:\Program Files\Common Files\Real\Update_OB\realsched.exe
C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Program Files\MSN Messenger\MsnMsgr.Exe
C:\Program Files\Thunder\Program\Thunder5.exe
C:\WINDOWS\system32\AppleTimeSrv.exe
C:\WINDOWS\system32\STacSV.exe
C:\WINDOWS\system32\svchost.exe
C:\Program Files\Alwil Software\Avast4\ashMaiSv.exe
E:\HiJackThis.exe
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = about:blank
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Page_URL =
http://go.microsoft.com/fwlink/?LinkId=69157R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Default_Search_URL =
http://go.microsoft.com/fwlink/?LinkId=54896R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page =
http://go.microsoft.com/fwlink/?LinkId=54896R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page =
http://go.microsoft.com/fwlink/?LinkId=69157O2 - BHO: Thunder AtOnce - {01443AEC-0FD1-40fd-9C87-E93D1494C233} - C:\Program Files\Thunder\ComDlls\TDAtOnce_Now.dll
O2 - BHO: BitComet ClickCapture - {39F7E362-828A-4B5A-BCAF-5B79BFDFEA60} - C:\Program Files\BitComet\tools\BitCometBHO_1.1.9.24.dll
O2 - BHO: Groove GFS Browser Helper - {72853161-30C5-4D22-B7F9-0BBC1D38A37E} - C:\PROGRA~1\MICROS~2\Office12\GRA8E1~1.DLL
O2 - BHO: (no name) - {7E853D72-626A-48EC-A868-BA8D5E23E045} - (no file)
O2 - BHO: ThunderBHO - {889D2FEB-5411-4565-8998-1DD2C5261283} - C:\Program Files\Thunder\ComDlls\xunleiBHO_Now.dll
O4 - HKLM\..\Run: [IMJPMIG8.1] "C:\WINDOWS\IME\imjp8_1\IMJPMIG.EXE" /Spoil /RemAdvDef /Migration32
O4 - HKLM\..\Run: [PHIME2002ASync] C:\WINDOWS\system32\IME\TINTLGNT\TINTSETP.EXE /SYNC
O4 - HKLM\..\Run: [PHIME2002A] C:\WINDOWS\system32\IME\TINTLGNT\TINTSETP.EXE /IMEName
O4 - HKLM\..\Run: [IgfxTray] C:\WINDOWS\system32\igfxtray.exe
O4 - HKLM\..\Run: [HotKeysCmds] C:\WINDOWS\system32\hkcmd.exe
O4 - HKLM\..\Run: [Persistence] C:\WINDOWS\system32\igfxpers.exe
O4 - HKLM\..\Run: [SigmatelSysTrayApp] sttray.exe
O4 - HKLM\..\Run: [BluetoothAuthenticationAgent] rundll32.exe bthprops.cpl,,BluetoothAuthenticationAgent
O4 - HKLM\..\Run: [IRW] C:\WINDOWS\system32\IRW.exe
O4 - HKLM\..\Run: [Apple_KbdMgr] "C:\Program Files\Apple Keyboard Support\KbdMgr.exe"
O4 - HKLM\..\Run: [Brightness] C:\WINDOWS\system32\Brightness.exe
O4 - HKLM\..\Run: [GrooveMonitor] "C:\Program Files\Microsoft Office\Office12\GrooveMonitor.exe"
O4 - HKLM\..\Run: [Thunder] "C:\Program Files\Thunder\Thunder.exe" /s
O4 - HKLM\..\Run: [TkBellExe] "C:\Program Files\Common Files\Real\Update_OB\realsched.exe" -osboot
O4 - HKLM\..\Run: [avast!] C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
O4 - HKLM\..\Run: [upxdnd] C:\WINDOWS\upxdnd.exe
O4 - HKLM\..\Run: [NVDispDrv] C:\WINDOWS\NVDispDrv.exE
O4 - HKLM\..\Run: [GenProtect] C:\WINDOWS\GenProtect.exe
O4 - HKLM\..\Run: [WinForm] C:\WINDOWS\WinForm.exe
O4 - HKLM\..\Run: [MsIMMs32] C:\WINDOWS\MsIMMs32.exe
O4 - HKLM\..\Run: [Kvsc3] C:\WINDOWS\Kvsc3.exe
O4 - HKLM\..\Run: [cmdbcs] C:\WINDOWS\cmdbcs.exe
O4 - HKLM\..\Run: [AVPSrv] C:\WINDOWS\AVPSrv.exe
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O4 - HKCU\..\Run: [MsnMsgr] "C:\Program Files\MSN Messenger\MsnMsgr.Exe" /background
O4 - HKLM\..\Policies\Explorer\Run: [comrepl32] C:\windows\system32\com\comrepl32.exe
O4 - HKUS\S-1-5-18\..\Run: [ctfmon.exe] C:\WINDOWS\system32\CTFMON.EXE (User 'SYSTEM')
O4 - HKUS\.DEFAULT\..\Run: [ctfmon.exe] C:\WINDOWS\system32\CTFMON.EXE (User 'Default user')
O4 - Startup: Tencent QQ.lnk = C:\Program Files\Tencent\QQ\QQ.exe
O4 - Startup: ??QQ.lnk
O8 - Extra context menu item: &D&ownload &with BitComet - res://C:\Program Files\BitComet\BitComet.exe/AddLink.htm
O8 - Extra context menu item: &D&ownload all video with BitComet - res://C:\Program Files\BitComet\BitComet.exe/AddVideo.htm
O8 - Extra context menu item: &D&ownload all with BitComet - res://C:\Program Files\BitComet\BitComet.exe/AddAllLink.htm
O8 - Extra context menu item: Add to QQ Customized Emoticons - C:\Program Files\Tencent\QQ\AddEmotion.htm
O8 - Extra context menu item: Add to QQ Customized Panel - C:\Program Files\Tencent\QQ\AddPanel.htm
O8 - Extra context menu item: Add to QQ Emotions - C:\Program Files\Tencent\QQ\AddEmotion.htm
O8 - Extra context menu item: E&xport to Microsoft Excel - res://C:\PROGRA~1\MICROS~2\Office12\EXCEL.EXE/3000
O8 - Extra context menu item: Send picture by MMS - C:\Program Files\Tencent\QQ\SendMMS.htm
O8 - Extra context menu item: Send Picture with QQ MMS - C:\Program Files\Tencent\QQ\SendMMS.htm
O8 - Extra context menu item: Upload to QQ Network Hard Disk - C:\Program Files\Tencent\QQ\AddToNetDisk.htm
O8 - Extra context menu item: π”√—∏¿◊œ¬‘ÿ - C:\Program Files\Thunder\Program\geturl.htm
O8 - Extra context menu item: π”√—∏¿◊œ¬‘ÿ»´≤ø¡¥Ω” - C:\Program Files\Thunder\Program\getallurl.htm
O9 - Extra button: ∆Ù∂Ø—∏¿◊5 - {09BA8F6D-CB54-424B-839C-C2A6C8E6B436} - C:\Program Files\Thunder\Thunder.exe
O9 - Extra 'Tools' menuitem: ∆Ù∂Ø—∏¿◊5 - {09BA8F6D-CB54-424B-839C-C2A6C8E6B436} - C:\Program Files\Thunder\Thunder.exe
O9 - Extra button: Send to OneNote - {2670000A-7350-4f3c-8081-5663EE0C6C49} - C:\PROGRA~1\MICROS~2\Office12\ONBttnIE.dll
O9 - Extra 'Tools' menuitem: S&end to OneNote - {2670000A-7350-4f3c-8081-5663EE0C6C49} - C:\PROGRA~1\MICROS~2\Office12\ONBttnIE.dll
O9 - Extra button: BitComet Search - {461CC20B-FB6E-4f16-8FE8-C29359DB100E} - C:\Program Files\BitComet\tools\BitCometBHO_1.1.9.24.dll
O9 - Extra button: Research - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~2\Office12\REFIEBAR.DLL
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
O10 - Broken Internet access because of LSP provider 'c:\windows\system32\sqmapi32.dll' missing
O16 - DPF: {19EFFC12-25FB-479A-A0F2-1569AE1B3365} -
http://60.190.222.235/window.cabO16 - DPF: {1DABF8D5-8430-4985-9B7F-A30E53D709B3} (InstallHelper Class) -
http://cache.tv.qq.com/qqlive_ocx/QQLiveInstaller.cabO16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) -
http://www.update.microsoft.com/windowsupdate/v6/V5Controls/en/x86/client/wuweb_site.cab?1183400699750O16 - DPF: {6E32070A-766D-4EE6-879C-DC1FA91D2FC3} (MUWebControl Class) -
http://www.update.microsoft.com/microsoftupdate/v6/V5Controls/en/x86/client/muweb_site.cab?1183407720875O16 - DPF: {C728DAB8-FDF5-4CD7-89DD-879D25794C77} (KooPlayer Control) -
http://www.cctv.com/p2p/tvkoo/cctvplayer.ocxO16 - DPF: {D27CDB6E-AE6D-11CF-96B8-444553540000} (Shockwave Flash Object) -
http://fpdownload2.macromedia.com/get/shockwave/cabs/flash/swflash.cabO18 - Protocol: grooveLocalGWS - {88FED34C-F0CA-4636-A375-3CB6248B04CD} - C:\PROGRA~1\MICROS~2\Office12\GR99D3~1.DLL
O18 - Protocol: skype4com - {FFC8B962-9B40-4DFF-9458-1830C7DD7F5D} - C:\PROGRA~1\COMMON~1\Skype\SKYPE4~1.DLL
O20 - AppInit_DLLs: avzxemn.dll
O23 - Service: Apple Time Service (AppleTimeSrv) - Apple Inc. - C:\WINDOWS\system32\AppleTimeSrv.exe
O23 - Service: avast! iAVS4 Control Service (aswUpdSv) - ALWIL Software - C:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
O23 - Service: avast! Antivirus - ALWIL Software - C:\Program Files\Alwil Software\Avast4\ashServ.exe
O23 - Service: avast! Mail Scanner - ALWIL Software - C:\Program Files\Alwil Software\Avast4\ashMaiSv.exe
O23 - Service: avast! Web Scanner - ALWIL Software - C:\Program Files\Alwil Software\Avast4\ashWebSv.exe
O23 - Service: SigmaTel Audio Service (STacSV) - SigmaTel, Inc. - C:\WINDOWS\system32\STacSV.exe