Yeah, that stuff sucks info from your computer and publishes it out to them to use for marketing. Those guys suck. Sorry to piss on your post BJ, but that Comet Cursor thing is really really aweful.
One sure way to prevent them ever getting back in is to go into the windows directory and edit the file called hosts. There is no extension on the file at all. What you do is add the line "127.0.0.1
www.cometsystems.com" to the bottom of the file. That way, every time your browser tries to go to that site, it gets redirected back to your own computer (i.e. a dead end).