Basemhap32 on XP home sp2 ??

Help

I removed a virus from a client system and when I rebooted it now
bluescreens and tells me that basemhap32 is missing. I tried to run windows
setup from the cd to repair the installation but it will not run. It get
stuck after the screen which asked to press enter to continue r to repair...
When I press enter it tells me please wait.... and it doesn't do anything
else.

Please advise