mark, live anywhere around chermside? I might be able to drop around and help later on.
grab Lavasofts Adaware as well, you need different tools for different things, AVG is a virus scanner, spybot/adaware/hijack this are all spyware tools. Often you'll need a combo of both to clean everything, however you might be past the point of no return and need to reinstall windows to properly get rid of everything.
yes, I'm a computer nerd