To make sure everything is running fine run both anti virus and anti spyware apps in normal AND safe modes. (make sure that they are updated first ! ;)) (
AVG is good and free AV)
(A couple of good removal tools are
Spybot and
Adaware)
ALso an on line virus and spyware scanner is
Trend Housecall
Just a note; actively running two AV's on one machine can cause problems.
So if you are thinking about it make sure your current one is disabled first.
Same thing applies to online scanners as well.
Then remove any left over junk and clean the registry.
Removal of junk files is easy with
CCleaner a free app that does exactly what.