Hi mnelson,
Why have you attached this question to a very old topic?
In future, please start a new thread in the appropriate board.
Zlob is a Trojan downloader associated with rogue anti-spyware scams.
To look for Trojans, I recommend the anti-Trojan program Ewido (requires win200/XP):
http://www.ewido.net/en/
The malware downloaded by Zlob is very tricky to remove but there is a removal tool:
http://siri.urz.free.fr/Fix/SmitfraudFix_En.php
Follow the instructions on the page.
Good luck!