You could try ADAWARE, its pretty similar to SpyBot. You can get a copy from here
http://www.lavasoftusa.com/
That may run without crashing.
Also you could try Bazooka. It does not automatically clean problems, but does give you a good write up on how to do it. Good for nasty probs that Adaware and Spybot can't solve. You can get Bazooka at
www.download.com. Just do a search for Bazooka Adware and Spyware Scanner
Hope the above helps
Regards
The Doc