Learn how to uninstall/ remove the rogue security application called XP antivirus2008. I have used freeware tools / software in this process
Here are some files that you should search on your hard disk and delete if found
C:\WINDOWS\system32\scui.cpl
C:\WINDOWS\krln32.exe
C:\WINDOWS\system32\scvh0st.exe
C:\Program Files\Common Files\trjdwnl.dll
C:\WINDOWS\shlext32.exe

How to remove the rough/fake antivirus called XP antivirus or XP Security

XP antivirus (xpantivirus.com) Removal Guide. how to remove manually the rogue antispyware program. All the tools mentioned in this video are absolutely freeware. You are not supposed to buy anything in order to complete the removal process.
You should look for additional files listed below,which are not mentioned in the video tutorial and delete them if found.
C:\WINDOWS\krln32.exe
C:\WINDOWS\system32\scvh0st.exe
C:\Program Files\Common Files\trjdwnl.dll
C:\WINDOWS\shlext32.exe
c:\WINDOWS\system32\scui.cpl

XP antivirus 2008 is a massively spread Rogue antispyware application which uses aggressive tactics, to get into users computer and force him to buy the software.
Watch the video.
http://www.pcthreat.com/parasitebyid-6953en.html