Hi there JackRipperz
Before we begin, I would like to clarify something. Regarding the topic you posted in the Windows XP
forum, I believe it is a separate computer than the one we are dealing with here, as you mention this is your friend's?
Anyhow, the issue you seem to have is something related to the registry. The infection was not remove completely, and somethings seem to have not been dealt with successfully.
A couple of questions:
1) What programs do you open give you this message? Is it all .exe programs that happen? What specific file extension that you can't open?
Also, when he clicks properties on the desktop, an error message says "Cannot find C:// System 32/ rundll32.exe " (it's not exact but that's what it is)
Can you confirm the exact error, when it happens again?
Let me know.