Here is a link to a post I made earlier... it hopefully has the answers you are looking for.
system monitors & trojans
It is long, but it has instructions for what to do if your computer is hijacked, and how to fix it.
I hope this helps you out.
Kayne
can you feel the razor burning down my arm?
can you feel the blood dripping down my arm?
can you feel my tears as they fall on your lips?