You've got a pretty good malware infection going there. We'll need to get that cleaned up first.
Please go to the Malware Forum
and complete the steps there.
That will give you several steps that will help you clean up 70 percent of all problems by yourself. If at the end of the process you are still having difficulty--and you may not be-- post a hijackthis log in THAT
forum. Do Not reply to or "bump" your own topic...if it shows a reply, it may be overlooked as one that is being worked on.
If you are still having problems after getting a clean bill of health from the malware expert, please return to this thread.