Post your hijackthis on thier site and someone will come back to you. I did and got sorted. I opened my Task manager and googled all processors running and the one that was causing me problems was there.
In the end i had to use a program called "move on boot" to get rid of it. Then after i was sure everything was ok i had to get rid of all my system restore points so it was not hidding in there as well.
Hope this helps you.