Are you booting into safe mode before you run adaware, etc.?
It's the only way you'll get that shit off.
Here is a link that may help..
http://www.help2go.com/article152.html
Also, when you run hijack this.. be sure you really eyeball everything that looks odd and do a search in google for anything you have questions about.
People who do this to others, need to be skinned and dipped in salt.