attacked by trojan and virus - mszx23.exe Please help!

Hi I have been attacked by something. It started as several pop-ups while installing a new ipod and getting a pop-up that says "Is your computer infect with syware?" and is now turing into something else. When I run ie i get redirected to c:\windows\about, which is some stupid search engine. Also when i reboot I get a warning that windows explorer experienced problems and it crashes. Also, today when I got home from work my computer screen was full of Norton warnings about emails trying to be sent out.

I am getting the following warnings from Norton:

1. High risk - file tmpf02.exe
2. dload.exe is found to be a virus with a full system scan.

I also have the files mszx23.exe and snim.dll that seem to be a source of problems. In addition to that I have 3 winlogon.exe files in a folder called softwaredistribution that I don't know what is. And when I go to add/remove hardware I have something called "Best Search Engine" that I cannot get rid of.

Please help. I had a problem once before and you guys were the best. I am hoping for help once again.

Thanks in advance - below is my current hijack this log.

tbogg

Logfile of HijackThis v1.99.0
Scan saved at 7:57:52 PM, on 2/16/2005
Platform: Windows XP SP1 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP1 (6.00.2800.1106)

Running processes:
C:\WINDOWS\System32\smss.exe
C:\WINDOWS\system32\services.exe
C:\WINDOWS\system32\lsass.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Common Files\Symantec Shared\ccSetMgr.exe
C:\Program Files\Common Files\Symantec Shared\SNDSrvc.exe
C:\Program Files\Common Files\Symantec Shared\ccEvtMgr.exe
C:\WINDOWS\system32\spoolsv.exe
C:\Program Files\Common Files\Dell\EUSW\Support.exe
C:\Program Files\Common Files\Real\Update_OB\realsched.exe
C:\Program Files\MUSICMATCH\MUSICMATCH Jukebox\mmtask.exe
C:\Program Files\Common Files\Symantec Shared\ccApp.exe
C:\Program Files\Dell\Support\Alert\bin\NotifyAlert.exe
C:\Program Files\QuickTime\qttask.exe
C:\Program Files\iTunes\iTunesHelper.exe
C:\WINDOWS\BCMSMMSG.exe
C:\Program Files\Common Files\Symantec Shared\ccProxy.exe
C:\WINDOWS\System32\CTsvcCDA.exe
C:\Program Files\Norton Internet Security\Norton AntiVirus\navapsvc.exe
C:\WINDOWS\System32\nvsvc32.exe
C:\Program Files\Norton Internet Security\Norton AntiVirus\SAVScan.exe
C:\WINDOWS\System32\svchost.exe
C:\Program Files\Common Files\Symantec Shared\CCPD-LC\symlcsvc.exe
C:\WINDOWS\wanmpsvc.exe
C:\WINDOWS\System32\MsPMSPSv.exe
C:\Program Files\iPod\bin\iPodService.exe
C:\WINDOWS\System32\wuauclt.exe
C:\WINDOWS\explorer.exe
C:\Program Files\Messenger\msmsgs.exe
C:\HJT\HijackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Default_Page_URL = http://www.dellnet.com/
R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.dellnet.com/
R1 - HKCU\Software\Microsoft\Internet Connection Wizard,ShellNext = http://www.dellnet.com/
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,ProxyOverride = http://localhost;
R3 - Default URLSearchHook is missing
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 6.0\Reader\ActiveX\AcroIEHelper.dll
O2 - BHO: (no name) - {B72F75B8-93F3-429D-B13E-660B206D897A} - C:\WINDOWS\System32\snim.dll (file missing)
O2 - BHO: NAV Helper - {BDF3E430-B101-42AD-A544-FADC6B084872} - C:\Program Files\Norton Internet Security\Norton AntiVirus\NavShExt.dll
O3 - Toolbar: &Radio - {8E718888-423F-11D2-876E-00A0C9082467} - C:\WINDOWS\System32\msdxm.ocx
O3 - Toolbar: Norton AntiVirus - {42CDD1BF-3FFB-4238-8AD1-7859DF00B1D6} - C:\Program Files\Norton Internet Security\Norton AntiVirus\NavShExt.dll
O4 - HKLM\..\Run: [NvCplDaemon] RUNDLL32.EXE C:\WINDOWS\System32\NvCpl.dll,NvStartup
O4 - HKLM\..\Run: [DwlClient] C:\Program Files\Common Files\Dell\EUSW\Support.exe
O4 - HKLM\..\Run: [TkBellExe] "C:\Program Files\Common Files\Real\Update_OB\realsched.exe" -osboot
O4 - HKLM\..\Run: [MediaFace Integration] C:\Program Files\Fellowes\MediaFACE 4.0\SetHook.exe
O4 - HKLM\..\Run: [mmtask] C:\Program Files\MUSICMATCH\MUSICMATCH Jukebox\mmtask.exe
O4 - HKLM\..\Run: [ccApp] "C:\Program Files\Common Files\Symantec Shared\ccApp.exe"
O4 - HKLM\..\Run: [URLLSTCK.exe] C:\Program Files\Norton Internet Security\UrlLstCk.exe
O4 - HKLM\..\Run: [QuickTime Task] "C:\Program Files\QuickTime\qttask.exe" -atboottime
O4 - HKLM\..\Run: [SSC_UserPrompt] C:\Program Files\Common Files\Symantec Shared\Security Center\UsrPrmpt.exe
O4 - HKLM\..\Run: [Symantec NetDriver Monitor] C:\PROGRA~1\SYMNET~1\SNDMon.exe
O4 - HKLM\..\Run: [iTunesHelper] C:\Program Files\iTunes\iTunesHelper.exe
O4 - HKLM\..\Run: [BCMSMMSG] BCMSMMSG.exe
O4 - HKCU\..\Run: [MSMSGS] "C:\Program Files\Messenger\msmsgs.exe" /background
O4 - Global Startup: Adobe Gamma Loader.exe.lnk = C:\Program Files\Common Files\Adobe\Calibration\Adobe Gamma Loader.exe
O8 - Extra context menu item: E&xport to Microsoft Excel - res://C:\PROGRA~1\MICROS~2\OFFICE11\EXCEL.EXE/3000
O9 - Extra button: Research - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~2\OFFICE11\REFIEBAR.DLL
O9 - Extra button: Real.com - {CD67F990-D8E9-11d2-98FE-00C0F0318AFE} - C:\WINDOWS\System32\Shdocvw.dll
O16 - DPF: {62475759-9E84-458E-A1AB-5D2C442ADFDE} - http://a1540.g.akamai.net/7/1540/52/20040427/qtinstall.info.apple.com/saba/us/win/QuickTimeInstaller.exe
O16 - DPF: {78AF2F24-A9C3-11D3-BF8C-0060B0FCC122} (AcDcToday Control) - file://C:\Program Files\AutoCAD 2002\AcDcToday.ocx
O16 - DPF: {AE563720-B4F5-11D4-A415-00108302FDFD} (NOXLATE-BANR) - file://C:\Program Files\AutoCAD 2002\InstBanr.ocx
O16 - DPF: {C6637286-300D-11D4-AE0A-0010830243BD} (InstaFred) - file://C:\Program Files\AutoCAD 2002\InstFred.ocx
O16 - DPF: {CC05BC12-2AA2-4AC7-AC81-0E40F83B1ADF} (Live365Player Class) - http://www.live365.com/players/play365.cab
O16 - DPF: {DF780F87-FF2B-4DF8-92D0-73DB16A1543A} (PopCapLoader Object) - http://zone.msn.com/bingame/zuma/default/popcaploader_v5.cab
O16 - DPF: {F281A59C-7B65-11D3-8617-0010830243BD} (AcPreview Control) - file://C:\Program Files\AutoCAD 2002\AcPreview.ocx
O18 - Filter: text/html - {B72F75B8-93F3-429D-B13E-660B206D897A} - C:\WINDOWS\System32\snim.dll
O18 - Filter: text/plain - {B72F75B8-93F3-429D-B13E-660B206D897A} - C:\WINDOWS\System32\snim.dll
O23 - Service: Symantec Event Manager - Symantec Corporation - C:\Program Files\Common Files\Symantec Shared\ccEvtMgr.exe
O23 - Service: Symantec Network Proxy - Symantec Corporation - C:\Program Files\Common Files\Symantec Shared\ccProxy.exe
O23 - Service: Symantec Password Validation - Symantec Corporation - C:\Program Files\Common Files\Symantec Shared\ccPwdSvc.exe
O23 - Service: Symantec Settings Manager - Symantec Corporation - C:\Program Files\Common Files\Symantec Shared\ccSetMgr.exe
O23 - Service: Creative Service for CDROM Access - Creative Technology Ltd - C:\WINDOWS\System32\CTsvcCDA.exe
O23 - Service: iPod Service - Apple Computer, Inc. - C:\Program Files\iPod\bin\iPodService.exe
O23 - Service: Norton AntiVirus Auto Protect Service - Symantec Corporation - C:\Program Files\Norton Internet Security\Norton AntiVirus\navapsvc.exe
O23 - Service: Intel NCS NetService - Intel(R) Corporation - C:\Program Files\Intel\NCS\Sync\NetSvc.exe
O23 - Service: NVIDIA Driver Helper Service - NVIDIA Corporation - C:\WINDOWS\System32\nvsvc32.exe
O23 - Service: SAVScan - Symantec Corporation - C:\Program Files\Norton Internet Security\Norton AntiVirus\SAVScan.exe
O23 - Service: ScriptBlocking Service - Symantec Corporation - C:\PROGRA~1\COMMON~1\SYMANT~1\SCRIPT~1\SBServ.exe
O23 - Service: Symantec Network Drivers Service - Symantec Corporation - C:\Program Files\Common Files\Symantec Shared\SNDSrvc.exe
O23 - Service: Symantec Core LC - Symantec Corporation - C:\Program Files\Common Files\Symantec Shared\CCPD-LC\symlcsvc.exe
O23 - Service: SymWMI Service - Symantec Corporation - C:\Program Files\Common Files\Symantec Shared\Security Center\SymWSC.exe
O23 - Service: WAN Miniport (ATW) Service - America Online, Inc. - C:\WINDOWS\wanmpsvc.exe