Help Virus!!!

[morpheusv6]

A virus just entered my system about half an hour back via a autorun feature on a USB drive. It did not allow me to open Firefox and closed the program whenever I ran it, suggesting me to use IE instead. Zone alarm shows IE as trying to access the web as a changed program.
Cannot change the folder views via the explorer hae to use the registry instead. Folder options not visible in the control panel, instead a new notepad like icon is visible.
Avast reported: Win32: Small CBL [Wrm] and Win32PcClient-FD[Trj]

Changed the registry to show hidden and system folders and found a new hidden suspicious folder. Deleted it instantly!
Firefox started working.
Avast Antivirus scan is unable to detect the virus though it showed up in the Process Manager of Lavasoft Adaware.
Ran Spybot, AVG rootkit detector as well.

My question is: should I allow IE to access the net or not?
How do I restore the folder options in control panel?

Hijack This report:
Logfile of HijackThis v1.99.1
Scan saved at 8:53:51 PM, on 5/16/2007
Platform: Windows XP SP2 (WinNT 5.01.2600)
MSIE: Internet Explorer v7.00 (7.00.6000.16441)

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\ZoneLabs\vsmon.exe
C:\Program Files\Alwil Software\Avast4\aswUpdSv.exe
C:\Program Files\Alwil Software\Avast4\ashServ.exe
C:\WINDOWS\system32\spoolsv.exe
C:\Program Files\APC\APC PowerChute Personal Edition\mainserv.exe
C:\WINDOWS\system32\oodag.exe
C:\WINDOWS\system32\svchost.exe
C:\WINDOWS\system32\SearchIndexer.exe
C:\Program Files\DU Meter\DUMeter.exe
C:\WINDOWS\RTHDCPL.EXE
C:\Program Files\Zone Labs\ZoneAlarm\zlclient.exe
C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
C:\Program Files\LClock\LClock.exe
C:\Program Files\Netropa\Multimedia Keyboard\MMKeybd.exe
C:\WINDOWS\system32\ctfmon.exe
C:\Program Files\APC\APC PowerChute Personal Edition\apcsystray.exe
C:\Program Files\Netropa\Onscreen Display\OSD.exe
C:\Program Files\Alwil Software\Avast4\ashMaiSv.exe
C:\Program Files\Alwil Software\Avast4\ashWebSv.exe
C:\Program Files\SiteAdvisor\6009\SiteAdv.exe
C:\WINDOWS\system32\taskmgr.exe
C:\WINDOWS\explorer.exe
C:\Program Files\Mozilla Firefox\firefox.exe
C:\WINDOWS\system32\sysocmgr.exe
C:\WINDOWS\system32\SearchProtocolHost.exe
C:\WINDOWS\system32\tcpsvcs.exe
G:\hijackthis\HijackThis.exe
C:\WINDOWS\system32\cmd.exe
C:\WINDOWS\system32\netsh.exe

R0 - HKCU\Software\Microsoft\Internet Explorer\Main,Start Page = http://google.com/
O2 - BHO: Adobe PDF Reader Link Helper - {06849E9F-C8D7-4D59-B87D-784B7D6BE0B3} - C:\Program Files\Common Files\Adobe\Acrobat\ActiveX\AcroIEHelper.dll
O2 - BHO: (no name) - {089FD14D-132B-48FC-8861-0048AE113215} - C:\Program Files\SiteAdvisor\6009\SiteAdv.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\jre1.6.0_01\bin\ssv.dll
O3 - Toolbar: McAfee SiteAdvisor - {0BF43445-2F28-4351-9252-17FE6E806AA0} - C:\Program Files\SiteAdvisor\6009\SiteAdv.dll
O4 - HKLM\..\Run: [DU Meter] C:\Program Files\DU Meter\DUMeter.exe
O4 - HKLM\..\Run: [RTHDCPL] RTHDCPL.EXE
O4 - HKLM\..\Run: [ZoneAlarm Client] "C:\Program Files\Zone Labs\ZoneAlarm\zlclient.exe"
O4 - HKLM\..\Run: [avast!] C:\PROGRA~1\ALWILS~1\Avast4\ashDisp.exe
O4 - HKLM\..\Run: [LClock] C:\Program Files\LClock\LClock.exe
O4 - HKLM\..\Run: [MULTIMEDIA KEYBOARD] C:\Program Files\Netropa\Multimedia Keyboard\MMKeybd.exe
O4 - HKLM\..\Run: [Pinnacle WebUpdater] "C:\Program Files\Pinnacle\Shared Files\Programs\WebUpdater\WebUpdater.exe" -s -f=UpdateVersion.xml -url=http://cdn.pinnaclesys.com/SupportFiles
O4 - HKLM\..\Run: [CorelDRAW Graphics Suite 11b] C:\Program Files\Corel\Corel Graphics 12\Languages\EN\Programs\Registration.exe /title="CorelDRAW Graphics Suite 12" /date=052007 serial=DR12WES-3007622-EUW lang=EN
O4 - HKCU\..\Run: [ctfmon.exe] C:\WINDOWS\system32\ctfmon.exe
O4 - Global Startup: apcsystray.lnk = C:\Program Files\APC\APC PowerChute Personal Edition\apcsystray.exe
O4 - Global Startup: Windows Desktop Search.lnk = C:\Program Files\Windows Desktop Search\WindowsSearch.exe
O8 - Extra context menu item: &Clean Traces - C:\Program Files\DAP\Privacy Package\dapcleanerie.htm
O8 - Extra context menu item: &Download with &DAP - C:\Program Files\DAP\dapextie.htm
O8 - Extra context menu item: Download &all with DAP - C:\Program Files\DAP\dapextie2.htm
O8 - Extra context menu item: E&xport to Microsoft Excel - res://C:\PROGRA~1\MICROS~1\Office12\EXCEL.EXE/3000
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0_01\bin\ssv.dll
O9 - Extra 'Tools' menuitem: Sun Java Console - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0_01\bin\ssv.dll
O9 - Extra button: Research - {92780B25-18CC-41C8-B9BE-3C9C571A8263} - C:\PROGRA~1\MICROS~1\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
O17 - HKLM\System\CCS\Services\Tcpip\..\{5E4124C9-518D-4BF0-9F80-7502446747AA}: NameServer = 61.1.96.69,61.1.96.71
O18 - Protocol: livecall - {828030A1-22C1-4009-854F-8E305202313F} - C:\PROGRA~1\MSNMES~1\MSGRAP~1.DLL
O18 - Protocol: ms-help - {314111C7-A502-11D2-BBCA-00C04F8EC294} - C:\Program Files\Common Files\Microsoft Shared\Help\hxds.dll
O18 - Protocol: msnim - {828030A1-22C1-4009-854F-8E305202313F} - C:\PROGRA~1\MSNMES~1\MSGRAP~1.DLL
O18 - Protocol: siteadvisor - {3A5DC592-7723-4EAA-9EE6-AF4222BCF879} - C:\Program Files\SiteAdvisor\6009\SiteAdv.dll
O18 - Filter hijack: text/xml - {807563E5-5146-11D5-A672-00B0D022E945} - C:\PROGRA~1\COMMON~1\MICROS~1\OFFICE12\MSOXMLMF.DL L
O20 - Winlogon Notify: WgaLogon - C:\WINDOWS\SYSTEM32\WgaLogon.dll
O21 - SSODL: WPDShServiceObj - {AAA288BA-9A4C-45B0-95D7-94D524869DB5} - C:\WINDOWS\system32\WPDShServiceObj.dll
O23 - Service: APC UPS Service - American Power Conversion Corporation - C:\Program Files\APC\APC PowerChute Personal Edition\mainserv.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 - Unknown owner - C:\Program Files\Alwil Software\Avast4\ashMaiSv.exe" /service (file missing)
O23 - Service: avast! Web Scanner - Unknown owner - C:\Program Files\Alwil Software\Avast4\ashWebSv.exe" /service (file missing)
O23 - Service: O&O Defrag - O&O Software GmbH - C:\WINDOWS\system32\oodag.exe
O23 - Service: TrueVector Internet Monitor (vsmon) - Zone Labs, LLC - C:\WINDOWS\system32\ZoneLabs\vsmon.exe

[Third Eye]

Firefox not running on system

[morpheusv6]

Thanks for the help. Removed the virus. But I am still unable to view hidden files by choosing the option in folder options(On selecting show hidden files, nothing happens). Also folder options is not visible in the control panel.

[Batistabomb]

run REGEDIT,HKEY_LOCAL_MACHINE,SOFTWARE,MICROSOFT,WIND OWS,CURRENT VERSION,EXPLORER,ADVANCED,FOLDER,HIDDEN,on the right side in blank white space right click and create NEW STRING VALUE AND RENAME IT AS TYPE,THEN DOUBLE CLICK ON IT AND ENTER GROUP in the value field