Hi there, I took on the project of cleaning up my housemate's computer and after removing some 200+ malware instances, have been stumped on getting rid of nail.exe and BetterInternet spyware. Here's a copy of my hijackthis log, so if anyone out there can spare some time to help me out, it'd be much appreciated. thanks in advance

Logfile of HijackThis v1.99.1
Scan saved at 9:21:49 PM, on 10/30/2007
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP2 (6.00.2900.2180)

Running processes:
C:\WINNT\System32\smss.exe
C:\WINNT\system32\winlogon.exe
C:\WINNT\system32\services.exe
C:\WINNT\system32\lsass.exe
C:\WINNT\system32\svchost.exe
C:\WINNT\System32\svchost.exe
C:\WINNT\system32\spoolsv.exe
C:\WINNT\Explorer.exe
C:\Program Files\Eset\nod32krn.exe
C:\WINNT\System32\svchost.exe
C:\WINNT\wanmpsvc.exe
C:\WINNT\GWMDMMSG.exe
C:\WINNT\System32\igfxtray.exe
C:\WINNT\System32\hkcmd.exe
C:\Program Files\Apoint2K\Apoint.exe
C:\WINNT\GWHotKey.exe
C:\Program Files\Adaptec\Easy CD Creator 5\DirectCD\DirectCD.exe
C:\Program Files\Common Files\Real\Update_OB\realsched.exe
C:\Program Files\Java\jre1.5.0_02\bin\jusched.exe
C:\Program Files\iTunes\iTunesHelper.exe
C:\Program Files\Eset\nod32kui.exe
C:\Program Files\Apoint2K\Apntex.exe
C:\Program Files\NETGEAR\MA521 Configuration Utility\wlancfg5.exe
C:\Program Files\iPod\bin\iPodService.exe
C:\WINNT\System32\svchost.exe
C:\Program Files\Mozilla Firefox\firefox.exe
C:\Program Files\Microsoft Money\System\urlmap.exe
C:\Program Files\HijackThis\HijackThis.exe

R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Bar = http://websearch.drsnsrch.com/sidesearch.cgi?id=
R1 - HKCU\Software\Microsoft\Internet Explorer\Main,Search Page = http://websearch.drsnsrch.com/sidesearch.cgi?id=
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Bar = http://websearch.drsnsrch.com/sidesearch.cgi?id=
R1 - HKLM\Software\Microsoft\Internet Explorer\Main,Search Page = http://websearch.drsnsrch.com/sidesearch.cgi?id=
R0 - HKLM\Software\Microsoft\Internet Explorer\Main,Start Page = http://www.catholic.com
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,SearchAssistant = http://websearch.drsnsrch.com/sidesearch.cgi?id=
R0 - HKLM\Software\Microsoft\Internet Explorer\Search,CustomizeSearch = http://websearch.drsnsrch.com/sidesearch.cgi?id=
R1 - HKCU\Software\Microsoft\Internet Explorer\SearchURL,(Default) = websearch.drsnsrch.com/q.cgi?q=
R1 - HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings,AutoConfigURL = http://ucsbuxa.ucsb.edu:9000/ucsblibrary
F2 - REG:system.ini: Shell=Explorer.exe C:\WINNT\Nail.exe
O2 - BHO: Band Class - {00F1D395-4744-40f0-A611-980F61AE2C59} - (no file)
O2 - BHO: AcroIEHlprObj Class - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Adobe\Acrobat 5.0\Reader\ActiveX\AcroIEHelper.ocx
O2 - BHO: BestOffers Shopping BHO - {F5DE8ADB-4A69-4e56-96AB-823171C8E9D8} - (no file)
O2 - BHO: (no name) - {FDD3B846-8D59-4ffb-8758-209B6AD74ACC} - C:\Program Files\Microsoft Money\System\mnyviewer.dll
O3 - Toolbar: mSpace Toolbar - {ED46E61C-C391-49ED-82F8-A3DCAA44671F} - (no file)
O3 - Toolbar: BestOffers Shopping v1.20 - {7FD44536-9DF0-4034-939F-5BD4D98E3187} - (no file)
O4 - HKLM\..\Run: [GWMDMMSG] GWMDMMSG.exe
O4 - HKLM\..\Run: [IgfxTray] C:\WINNT\System32\igfxtray.exe
O4 - HKLM\..\Run: [HotKeysCmds] C:\WINNT\System32\hkcmd.exe
O4 - HKLM\..\Run: [Apoint] C:\Program Files\Apoint2K\Apoint.exe
O4 - HKLM\..\Run: [GWMDMpi] C:\WINNT\GWMDMpi.exe
O4 - HKLM\..\Run: [Multi-function Keyboard] GWHotKey.exe
O4 - HKLM\..\Run: [AdaptecDirectCD] "C:\Program Files\Adaptec\Easy CD Creator 5\DirectCD\DirectCD.exe"
O4 - HKLM\..\Run: [TkBellExe] "C:\Program Files\Common Files\Real\Update_OB\realsched.exe" -osboot
O4 - HKLM\..\Run: [SunJavaUpdateSched] C:\Program Files\Java\jre1.5.0_02\bin\jusched.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: [KernelFaultCheck] %systemroot%\system32\dumprep 0 -k
O4 - HKLM\..\Run: [nod32kui] "C:\Program Files\Eset\nod32kui.exe" /WAITSERVICE
O4 - HKCU\..\Run: [Microsoft Works Update Detection] C:\Program Files\Microsoft Works\WkDetect.exe
O4 - HKCU\..\Run: [MoneyAgent] "C:\Program Files\Microsoft Money\System\Money Express.exe"
O4 - HKCU\..\Run: [Yahoo! Pager] C:\Program Files\Yahoo!\Messenger\ypager.exe -quiet
O4 - HKCU\..\Run: [RealPlayer] "C:\Program Files\Real\RealPlayer\realplay.exe" /RunUPGToolCommandReBoot
O4 - Global Startup: Adobe Gamma Loader.exe.lnk = C:\Program Files\Common Files\Adobe\Calibration\Adobe Gamma Loader.exe
O4 - Global Startup: America Online 8.0 Tray Icon.lnk = C:\Program Files\America Online 8.0\aoltray.exe
O4 - Global Startup: AOL Companion.lnk = C:\Program Files\AOL Companion\companion.exe
O4 - Global Startup: MA521 Configuration Utility.lnk = ?
O8 - Extra context menu item: &AIM Search - res://C:\Program Files\AIM Toolbar\AIMBar.dll/aimsearch.htm
O8 - Extra context menu item: Web Rebates - file://C:\Program Files\Web_Rebates\Sy1150\Tp1150\scri1150a.htm
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.5.0_02\bin\npjpi150_02.dll
O9 - Extra 'Tools' menuitem: Sun Java Console - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.5.0_02\bin\npjpi150_02.dll
O9 - Extra button: (no name) - {A26ABCF0-1C8F-46e7-A67C-0489DC21B9CC} - C:\WINNT\System32\shdocvw.dll
O9 - Extra 'Tools' menuitem: IMI - {A26ABCF0-1C8F-46e7-A67C-0489DC21B9CC} - C:\WINNT\System32\shdocvw.dll
O9 - Extra button: Real.com - {CD67F990-D8E9-11d2-98FE-00C0F0318AFE} - C:\WINNT\System32\Shdocvw.dll
O9 - Extra button: MoneySide - {E023F504-0C5A-4750-A1E7-A9046DEA8A21} - C:\Program Files\Microsoft Money\System\mnyviewer.dll
O9 - Extra button: mSpace Toolbar - {ED46E61C-C391-49ED-82F8-A3DCAA44671F} - (no file)
O9 - Extra 'Tools' menuitem: mSpace Toolbar - {ED46E61C-C391-49ED-82F8-A3DCAA44671F} - (no file)
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
O9 - Extra button: (no name) - {6685509E-B47B-4f47-8E16-9A5F3A62F683} - file://C:\Program Files\Ebates_MoeMoneyMaker\Sy350\Tp350\scri350a.htm (file missing) (HKCU)
O12 - Plugin for .spop: C:\Program Files\Internet Explorer\Plugins\NPDocBox.dll
O16 - DPF: {41F17733-B041-4099-A042-B518BB6A408C} - http://a1540.g.akamai.net/7/1540/52/200210...meInstaller.exe
O16 - DPF: {B9191F79-5613-4C76-AA2A-398534BB8999} - http://us.dl1.yimg.com/download.yahoo.com/...utocomplete.cab
O18 - Protocol: msnim - {828030A1-22C1-4009-854F-8E305202313F} - "C:\PROGRA~1\MSNMES~1\msgrapp.dll" (file missing)
O20 - Winlogon Notify: igfxcui - C:\WINNT\SYSTEM32\igfxsrvc.dll
O20 - Winlogon Notify: NavLogon - C:\WINNT\System32\NavLogon.dll
O23 - Service: iPod Service - Apple Computer, Inc. - C:\Program Files\iPod\bin\iPodService.exe
O23 - Service: NOD32 Kernel Service (NOD32krn) - Eset - C:\Program Files\Eset\nod32krn.exe
O23 - Service: PictureTaker - Unknown owner - c:\fixit\pt\PCTKRNT.SYS (file missing)
O23 - Service: Pml Driver HPZ12 - HP - C:\WINNT\system32\HPZipm12.exe
O23 - Service: System Startup Service (SvcProc) - Unknown owner - C:\WINNT\svcproc.exe (file missing)
O23 - Service: WAN Miniport (ATW) Service (WANMiniportService) - America Online, Inc. - C:\WINNT\wanmpsvc.exe