Please help

My son has gotten a virus and am completely lost on how to get rid of it or if there is anything I can do. Thanks in advance for any help.

Here is the Hijackthis log

Logfile of Trend Micro HijackThis v2.0.2
Scan saved at 13:17:09, on 4/20/2009
Platform: Windows XP SP3 (WinNT 5.01.2600)
MSIE: Internet Explorer v6.00 SP3 (6.00.2900.5512)
Boot mode: Safe mode with network support

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\Explorer.EXE
C:\Program Files\Internet Explorer\iexplore.exe
C:\Program Files\Trend Micro\HijackThis\HijackThis.exe

R3 - URLSearchHook: Yahoo! ¤u¨ã¦C - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\PROGRA~1\Yahoo!\Companion\Installs\cpn\yt.dll
O2 - BHO: &Yahoo! Toolbar Helper - {02478D38-C3F9-4efb-9B51-7695ECA05670} - C:\PROGRA~1\Yahoo!\Companion\Installs\cpn\yt.dll
O2 - BHO: (no name) - {d5bf49a0-94f3-42bd-f434-3604812c8955} - (no file)
O3 - Toolbar: Yahoo! ¤u¨ã¦C - {EF99BD32-C1FB-11D2-892F-0090271D4F88} - C:\PROGRA~1\Yahoo!\Companion\Installs\cpn\yt.dll
O3 - Toolbar: AVG Security Toolbar - {A057A204-BACC-4D26-9990-79A187E2698E} - C:\PROGRA~1\AVG\AVG8\AVGTOO~1.DLL
O4 - HKLM\..\Run: [RTHDCPL] RTHDCPL.EXE
O4 - HKLM\..\Run: [Persistence] C:\WINDOWS\system32\igfxpers.exe
O4 - HKLM\..\Run: [IgfxTray] C:\WINDOWS\system32\igfxtray.exe
O4 - HKLM\..\Run: [HotKeysCmds] C:\WINDOWS\system32\hkcmd.exe
O4 - HKLM\..\Run: [Alcmtr] ALCMTR.EXE
O4 - HKLM\..\Run: [nmctxth] "C:\Program Files\Common Files\Pure Networks Shared\Platform\nmctxth.exe"
O4 - HKLM\..\Run: [nmapp] "C:\Program Files\Pure Networks\Network Magic\nmapp.exe" -autorun -nosplash
O4 - HKLM\..\Run: [reader_s] C:\WINDOWS\System32\reader_s.exe
O4 - HKLM\..\Run: [Imeqelijosif] rundll32.exe "C:\WINDOWS\ivomirol.dll",e
O4 - HKCU\..\Run: [Yahoo! Pager] "C:\PROGRA~1\Yahoo!\MESSEN~1\YAHOOM~1.EXE" -quiet
O4 - HKCU\..\Run: [RegistryMechanic] C:\Program Files\Registry Mechanic\RegMech.exe /H
O4 - HKCU\..\Run: [reader_s] C:\Documents and Settings\Daniel Francis\reader_s.exe
O4 - HKUS\S-1-5-19\..\Run: [ruyojusobo] Rundll32.exe "C:\WINDOWS\system32\bihorugi.dll",s (User 'LOCAL SERVICE')
O4 - HKUS\S-1-5-20\..\Run: [ruyojusobo] Rundll32.exe "C:\WINDOWS\system32\bihorugi.dll",s (User 'NETWORK SERVICE')
O4 - HKUS\S-1-5-18\..\Run: [reader_s] C:\Documents and Settings\Daniel Francis\reader_s.exe (User 'SYSTEM')
O4 - HKUS\.DEFAULT\..\Run: [reader_s] C:\Documents and Settings\Daniel Francis\reader_s.exe (User 'Default user')
O9 - Extra button: (no name) - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0_07\bin\ssv.dll
O9 - Extra 'Tools' menuitem: Sun Java Console - {08B0E5C0-4FCB-11CF-AAA5-00401C608501} - C:\Program Files\Java\jre1.6.0_07\bin\ssv.dll
O9 - Extra button: Yahoo! Services - {5BAB4B5B-68BC-4B02-94D6-2FC0DE4A7897} - C:\Program Files\Yahoo!\Common\yiesrvc.dll
O9 - Extra button: (no name) - {DFB852A3-47F8-48C4-A200-58CAB36FD2A2} - C:\PROGRA~1\SPYBOT~1\SDHelper.dll
O9 - Extra 'Tools' menuitem: Spybot - Search & Destroy Configuration - {DFB852A3-47F8-48C4-A200-58CAB36FD2A2} - C:\PROGRA~1\SPYBOT~1\SDHelper.dll
O9 - Extra button: (no name) - {e2e2dd38-d088-4134-82b7-f2ba38496583} - C:\WINDOWS\Network Diagnostic\xpnetdiag.exe
O9 - Extra 'Tools' menuitem: @xpsp3res.dll,-20001 - {e2e2dd38-d088-4134-82b7-f2ba38496583} - C:\WINDOWS\Network Diagnostic\xpnetdiag.exe
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
O16 - DPF: {11260943-421B-11D0-8EAC-0000C07D88CF} (iPIX ActiveX Control) - http://www.ipix.com/viewers/ipixx.cab
O16 - DPF: {30528230-99f7-4bb4-88d8-fa1d4f56a2ab} (Installation Support) - C:\Program Files\Yahoo!\Common\Yinsthelper.dll
O16 - DPF: {48DD0448-9209-4F81-9F6D-D83562940134} (MySpace Uploader Control) - http://lads.myspace.com/upload/MySpaceUploader1006.cab
O16 - DPF: {4F1E5B1A-2A80-42CA-8532-2D05CB959537} (MSN Photo Upload Tool) - http://gfx1.hotmail.com/mail/w3/pr01/resources/MSNPUpld.cab
O16 - DPF: {6414512B-B978-451D-A0D8-FCFDF33E833C} (WUWebControl Class) - http://www.update.microsoft.com/windowsupdate/v6/V5Controls/en/x86/client/wuweb_site.cab?1213663707394
O16 - DPF: {67DABFBF-D0AB-41FA-9C46-CC0F21721616} (DivXBrowserPlugin Object) - http://go.divx.com/plugin/DivXBrowserPlugin.cab
O16 - DPF: {CF40ACC5-E1BB-4AFF-AC72-04C2F616BCA7} (get_atlcom Class) - http://wwwimages.adobe.com/www.adobe.com/products/acrobat/nos/gp.cab
O16 - DPF: {E06E2E99-0AA1-11D4-ABA6-0060082AA75C} -
O18 - Protocol: linkscanner - {F274614C-63F8-47D5-A4D1-FBDDE494F8D1} - C:\Program Files\AVG\AVG8\avgpp.dll
O20 - AppInit_DLLs: avgrsstx.dll kmlucy.dll ,c:\progra~1\ThunMail\testabd.dll,
O23 - Service: AVG8 E-mail Scanner (avg8emc) - AVG Technologies CZ, s.r.o. - C:\PROGRA~1\AVG\AVG8\avgemc.exe
O23 - Service: AVG8 WatchDog (avg8wd) - AVG Technologies CZ, s.r.o. - C:\PROGRA~1\AVG\AVG8\avgwdsvc.exe
O23 - Service: Background Intelligent Transfer Service (BITS) - Unknown owner - C:\WINDOWS\
O23 - Service: Dhcp server (DhcpSrv) - Unknown owner - C:\WINDOWS\dhcp\svchost.exe
O23 - Service: getPlus(R) Helper - NOS Microsystems Ltd. - C:\Program Files\NOS\bin\getPlus_HelperSvc.exe
O23 - Service: Google Software Updater (gusvc) - Google - C:\Program Files\Google\Common\Google Updater\GoogleUpdaterService.exe
O23 - Service: Pure Networks Platform Service (nmservice) - Cisco Systems, Inc. - C:\Program Files\Common Files\Pure Networks Shared\Platform\nmsrvc.exe
O23 - Service: pinger - Unknown owner - C:\TOSHIBA\IVP\ISM\pinger.exe
O23 - Service: Swupdtmr - Unknown owner - c:\TOSHIBA\IVP\swupdate\swupdtmr.exe

--
End of file - 5745 bytes

Sorry, but game over.

Your dealing with a file infecter known as Virut, see here for details:
http://miekiemoes.blogspot.com/2009/02/virut-and-other-file-infectors-throwing.html

Your computer has multiple infections, including a backdoor. A backdoor gives intruders complete control of your computer, logs your keystrokes, steal personal information, etc.

You are strongly advised to do the following:

• Disconnect the computer from the Internet and from any networked computers until it is cleaned.
  
• Back up all your important data except programs. The programs can be reinstalled back from the original disc or from the Net.
  
• Call all your banks, financial institutions, credit card companies and inform them that you may be a victim of identity theft and put a watch on your accounts. If you don't mind the hassle, change all your account numbers.
  
• From a clean computer, change all your passwords (ISP login password, your email address(es) passwords, financial accounts, PayPal, eBay, Amazon, online groups and forums and any other online activities you carry out which require a username and password).
  

Do NOT change your passwords from this computer as the attacker will be able to get all the new passwords and transaction records.

Due to its backdoor functionality, your computer is very likely to have been compromised and there is no way that it can be trusted again. Many experts in the security community believe that once infected with this type of Trojan, the best course of action would be to do a reformat and reinstallation of the operating system (OS).

To help you understand more, please take some time to read the following articles:

What are Remote Access Trojans and why are they dangerous
How do I respond to a possible identity theft and how do I prevent it
When should I do a reformat and reinstallation of my OS
Where to backup your files
How to backup your files in Windows XP
Restoring your backups