In addition to the other suggestions, I also run this little gem;
http://www.microsoft.com/athome/secu...e/default.mspx
M$ bought out Giant software some time back and re-labeled their spyware sweeper. Does a fine job and helps keep my system free of nasties
Almost forgot to mention...sorry to hear about the hack
Been there, done that...a long time ago...it sucks
Hope they get you up and running again soon!