Latest Version of
* HijackThis v1.98 *
Written by Merijn - merijn@spywareinfo.com
http://www.merijn.org/files/hijackthis.zip
http://www.merijn.org/index.html

Hijack This was designed to ferret out Hijackers - it is divided into several sections, including things like checking your HOSTS file to see if someone cleverly edited that.

I use a firewall, an AV, HijackThis, Adaware & Spybot, and check on updates regularly as need arises.