I saw this in a Google Groups search. Try it out...
Hi SteveC,
Nav detects it as "Trojan Horse" correct?
It's not a virus, but it is a trojan. It displays certain advertising for some porn sites upon bootup.
Remove the startup keys that reference Winpup32.exe Winpup32[1].exe and Winpup32[2].exe from the registry
Ensure your Internet Explorer is patched with the latest Patch
(
http://www.microsoft.com/technet/treeview/default.asp?url=/technet/se...)
because that is probably how it got onto your PC.
....
The file itself seems to spawn advertisements.....a drive-by d/l the
culprit.....
Look for --> C:\WINDOWS\SYSTEM32\winpup32.exe
And--> HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run ..... for it's startup key
.....
Just saw someone had ........C:\WINDOWS\System\winpup32.exe rather than the System32 folder.
SteveC
Thanks all; I have gotten rid of it.