Hi,
I'm running Windows XP and I'm getting the "Your System Is Infected! System has been stopped due to a serious malfuction." desktop wallpaper. When I right click and go to Display Properties, it does not allow me to change it. There are also a bunch of porn icons added to the desktop.
As per the sticky in this forum I have installed and performed the SUPERAntiSpyware scan. Desktop is now back to normal but getting some .DLL error text boxes on startup. Below are the results of the SUPERAntiSpyware scan. Thanks in advance for any help you can provide.

SUPERAntiSpyware Scan Log
http://www.superantispyware.com

Generated 11/07/2009 at 02:49 AM

Application Version : 4.29.1004

Core Rules Database Version : 4162
Trace Rules Database Version: 1978

Scan type : Complete Scan
Total Scan Time : 01:35:31

Memory items scanned : 426
Memory threats detected : 7
Registry items scanned : 5368
Registry threats detected : 19
File items scanned : 116756
File threats detected : 79

Trojan.Agent/Gen-FakeAlert[Calc]
C:\WINDOWS\SYSTEM32\CALC.DLL
C:\WINDOWS\SYSTEM32\CALC.DLL
[calc] C:\WINDOWS\SYSTEM32\CALC.DLL
[calc] C:\DOCUME~1\NETWOR~1\NTUSER.DLL
C:\DOCUME~1\NETWOR~1\NTUSER.DLL
C:\DOCUMENTS AND SETTINGS\DEFAULT\LOCAL SETTINGS\TEMP\RUNDLL32.DLL

Trojan.Unclassified/C00-WL/A
C:\WINDOWS\SYSTEM32\__C009AD91.DAT
C:\WINDOWS\SYSTEM32\__C009AD91.DAT
Software\Microsoft\Windows NT\CurrentVersion\WinLogon\Notify\__c009AD91

Trojan.Agent/Gen-Bongl[L]
C:\WINDOWS\SYSTEM32\MSXM192Z.DLL
C:\WINDOWS\SYSTEM32\MSXM192Z.DLL
[ter8m] C:\WINDOWS\SYSTEM32\MSXM192Z.DLL

Trojan.Agent/Gen-Reader_S
C:\WINDOWS\SYSTEM32\READER_S.EXE
C:\WINDOWS\SYSTEM32\READER_S.EXE
C:\DOCUMENTS AND SETTINGS\DEFAULT\READER_S.EXE
C:\DOCUMENTS AND SETTINGS\DEFAULT\READER_S.EXE
[reader_s] C:\WINDOWS\SYSTEM32\READER_S.EXE
[reader_s] C:\DOCUMENTS AND SETTINGS\DEFAULT\READER_S.EXE
HKLM\Software\Microsoft\Windows\CurrentVersion\Run#reader_s [ C:\WINDOWS\System32\reader_s.exe ]

Trojan.Dropper/Gen-NV
C:\WINDOWS\SYSTEM32\RESTORER32_A.EXE
C:\WINDOWS\SYSTEM32\RESTORER32_A.EXE
C:\DOCUMENTS AND SETTINGS\DEFAULT\RESTORER32_A.EXE
C:\DOCUMENTS AND SETTINGS\DEFAULT\RESTORER32_A.EXE
[restorer32_a] C:\WINDOWS\SYSTEM32\RESTORER32_A.EXE
[restorer32_a] C:\DOCUMENTS AND SETTINGS\DEFAULT\RESTORER32_A.EXE
C:\WINDOWS\Prefetch\RESTORER32_A.EXE-2C748582.pf

Trojan.Unclassified/C00-Installer
[A00F111D78.exe] C:\DOCUME~1\DEFAULT\LOCALS~1\TEMP\_A00F111D78.EXE
C:\DOCUME~1\DEFAULT\LOCALS~1\TEMP\_A00F111D78.EXE
C:\DOCUMENTS AND SETTINGS\DEFAULT\LOCAL SETTINGS\TEMP\_A00F111D78.EXE

Trojan.Agent/Gen
[Wallpaper] C:\WINDOWS\SYSTEM32\CRITICAL_WARNING.HTML
C:\WINDOWS\SYSTEM32\CRITICAL_WARNING.HTML
C:\WINDOWS\system32\A.TMP
C:\WINDOWS\system32\B.TMP
C:\DOCUMENTS AND SETTINGS\DEFAULT\LOCAL SETTINGS\TEMP\BNB.TMP
C:\DOCUMENTS AND SETTINGS\DEFAULT\LOCAL SETTINGS\TEMP\BNE.TMP
C:\WINDOWS\TEMP\VRT13.TMP
C:\WINDOWS\Prefetch\B.TMP-0826A2ED.pf
C:\WINDOWS\Prefetch\VRT13.TMP-0180F840.pf

Trojan.Unknown Origin
HKLM\Software\AGProtect
HKLM\Software\AGProtect#Cfg

Trojan.Media-Codec/V4
C:\Program Files\Video Add-on\ictmdl.dll
C:\Program Files\Video Add-on

Trojan.Unclassified/C00-WL
HKLM\SOFTWARE\MICROSOFT\WINDOWS NT\CURRENTVERSION\WINLOGON\NOTIFY\__C009AD91
HKLM\SOFTWARE\MICROSOFT\WINDOWS NT\CURRENTVERSION\WINLOGON\NOTIFY\__C009AD91#Asynchronous
HKLM\SOFTWARE\MICROSOFT\WINDOWS NT\CURRENTVERSION\WINLOGON\NOTIFY\__C009AD91#DllName
HKLM\SOFTWARE\MICROSOFT\WINDOWS NT\CURRENTVERSION\WINLOGON\NOTIFY\__C009AD91#Impersonate
HKLM\SOFTWARE\MICROSOFT\WINDOWS NT\CURRENTVERSION\WINLOGON\NOTIFY\__C009AD91#Startup
HKLM\SOFTWARE\MICROSOFT\WINDOWS NT\CURRENTVERSION\WINLOGON\NOTIFY\__C009AD91#Logon

Rogue.ProtectionSystem
C:\Program Files\Protection System

Adware.Tracking Cookie
.ads.pointroll.com [ C:\Documents and Settings\default\Application Data\Mozilla\Firefox\Profiles\4e0vtbi5.Default User2\cookies.txt ]
.ads.pointroll.com [ C:\Documents and Settings\default\Application Data\Mozilla\Firefox\Profiles\4e0vtbi5.Default User2\cookies.txt ]
.ads.pointroll.com [ C:\Documents and Settings\default\Application Data\Mozilla\Firefox\Profiles\4e0vtbi5.Default User2\cookies.txt ]
.advertising.com [ C:\Documents and Settings\default\Application Data\Mozilla\Firefox\Profiles\4e0vtbi5.Default User2\cookies.txt ]
.advertising.com [ C:\Documents and Settings\default\Application Data\Mozilla\Firefox\Profiles\4e0vtbi5.Default User2\cookies.txt ]
.advertising.com [ C:\Documents and Settings\default\Application Data\Mozilla\Firefox\Profiles\4e0vtbi5.Default User2\cookies.txt ]
.advertising.com [ C:\Documents and Settings\default\Application Data\Mozilla\Firefox\Profiles\4e0vtbi5.Default User2\cookies.txt ]
.atdmt.com [ C:\Documents and Settings\default\Application Data\Mozilla\Firefox\Profiles\4e0vtbi5.Default User2\cookies.txt ]
.clicksor.com [ C:\Documents and Settings\default\Application Data\Mozilla\Firefox\Profiles\4e0vtbi5.Default User2\cookies.txt ]
.imrworldwide.com [ C:\Documents and Settings\default\Application Data\Mozilla\Firefox\Profiles\4e0vtbi5.Default User2\cookies.txt ]
.jamster.com.au [ C:\Documents and Settings\default\Application Data\Mozilla\Firefox\Profiles\4e0vtbi5.Default User2\cookies.txt ]
.msnportal.112.2o7.net [ C:\Documents and Settings\default\Application Data\Mozilla\Firefox\Profiles\4e0vtbi5.Default User2\cookies.txt ]
.partygaming.122.2o7.net [ C:\Documents and Settings\default\Application Data\Mozilla\Firefox\Profiles\4e0vtbi5.Default User2\cookies.txt ]
.partypoker.com [ C:\Documents and Settings\default\Application Data\Mozilla\Firefox\Profiles\4e0vtbi5.Default User2\cookies.txt ]
.partypoker.com [ C:\Documents and Settings\default\Application Data\Mozilla\Firefox\Profiles\4e0vtbi5.Default User2\cookies.txt ]
.partypoker.com [ C:\Documents and Settings\default\Application Data\Mozilla\Firefox\Profiles\4e0vtbi5.Default User2\cookies.txt ]
.realmedia.com [ C:\Documents and Settings\default\Application Data\Mozilla\Firefox\Profiles\4e0vtbi5.Default User2\cookies.txt ]
.tribalfusion.com [ C:\Documents and Settings\default\Application Data\Mozilla\Firefox\Profiles\4e0vtbi5.Default User2\cookies.txt ]
.virginmoneyaustralia.122.2o7.net [ C:\Documents and Settings\default\Application Data\Mozilla\Firefox\Profiles\4e0vtbi5.Default User2\cookies.txt ]
a.tribalfusion.com [ C:\Documents and Settings\default\Application Data\Mozilla\Firefox\Profiles\4e0vtbi5.Default User2\cookies.txt ]
a.tribalfusion.com [ C:\Documents and Settings\default\Application Data\Mozilla\Firefox\Profiles\4e0vtbi5.Default User2\cookies.txt ]
ad.yieldmanager.com [ C:\Documents and Settings\default\Application Data\Mozilla\Firefox\Profiles\4e0vtbi5.Default User2\cookies.txt ]
ad.yieldmanager.com [ C:\Documents and Settings\default\Application Data\Mozilla\Firefox\Profiles\4e0vtbi5.Default User2\cookies.txt ]
ad.zanox.com [ C:\Documents and Settings\default\Application Data\Mozilla\Firefox\Profiles\4e0vtbi5.Default User2\cookies.txt ]
ads.revsci.net [ C:\Documents and Settings\default\Application Data\Mozilla\Firefox\Profiles\4e0vtbi5.Default User2\cookies.txt ]
server.iad.liveperson.net [ C:\Documents and Settings\default\Application Data\Mozilla\Firefox\Profiles\4e0vtbi5.Default User2\cookies.txt ]
server.iad.liveperson.net [ C:\Documents and Settings\default\Application Data\Mozilla\Firefox\Profiles\4e0vtbi5.Default User2\cookies.txt ]
server.iad.liveperson.net [ C:\Documents and Settings\default\Application Data\Mozilla\Firefox\Profiles\4e0vtbi5.Default User2\cookies.txt ]
C:\WINDOWS\system32\config\systemprofile\Cookies\[email protected][2].txt
C:\WINDOWS\system32\config\systemprofile\Cookies\system@apmebf[1].txt
C:\WINDOWS\system32\config\systemprofile\Cookies\system@atdmt[1].txt
C:\WINDOWS\system32\config\systemprofile\Cookies\[email protected][1].txt
C:\WINDOWS\system32\config\systemprofile\Cookies\[email protected][2].txt
C:\WINDOWS\system32\config\systemprofile\Cookies\system@mediaplex[2].txt
C:\WINDOWS\system32\config\systemprofile\Cookies\[email protected][1].txt
C:\WINDOWS\system32\config\systemprofile\Cookies\system@serving-sys[2].txt

Trojan.Agent/Gen-FDUPX
C:\DOCUMENTS AND SETTINGS\DEFAULT\LOCAL SETTINGS\TEMPORARY INTERNET FILES\CONTENT.IE5\QTFO1OJY\BOT[1].TXT
C:\WINDOWS\SYSTEM32\1E.TMP
C:\WINDOWS\Prefetch\1E.TMP-343B9247.pf

Trojan.Agent/Gen-Tmp[Hehe]
C:\WINDOWS\SYSTEM32\1D.TMP
C:\WINDOWS\Prefetch\1D.TMP-058FFBF9.pf

Trojan.Agent/Gen-NumTemp
C:\WINDOWS\SYSTEM32\5.TMP
C:\WINDOWS\SYSTEM32\6.TMP
C:\WINDOWS\SYSTEM32\9.TMP
C:\WINDOWS\Prefetch\6.TMP-3B726FB8.pf

Trojan.Agent/Gen-Dropper[Temp]
C:\WINDOWS\SYSTEM32\C.TMP
C:\WINDOWS\SYSTEM32\D.TMP
C:\WINDOWS\Prefetch\C.TMP-31A4EB53.pf
C:\WINDOWS\Prefetch\D.TMP-1D59F25F.pf

Trojan.Smitfraud Variant-Gen/Bensorty
C:\WINDOWS\SYSTEM32\U0070.DLL

Trojan.WinUpdate
C:\WINDOWS\SYSTEM32\WINUPDATE.EXE
C:\WINDOWS\Prefetch\WINUPDATE.EXE-0F50C4F5.pf

Trojan.Agent/Gen-FakeAlert
C:\WINDOWS\TEMP\VRT15.TMP
C:\WINDOWS\Prefetch\VRT15.TMP-16B447B2.pf

Trojan.Agent/Gen-SoftWin[Virut]
C:\WINDOWS\TEMP\VRT19.TMP
C:\WINDOWS\Prefetch\VRT19.TMP-05801C8F.pf