hakimovicz :
If your friend's computer had "Spy Sheriff" on it, more than
Microsoft Antispyware program is needed to COMPLETELY
REMOVE IT and any other spyware, etc that may be there.
Would encourage you to seek help on the forums at
www.landzdown.com ; this forum is staffed by ALL the
Experts who used to advise on the now-defunct
Lavasoft Ad-Aware Support forums.