Hi there,
Kazaa Lite is actually better then the original Kazaa, beside not having any ad-ware or spyware. As mention before, it also got an IP blocker and other utility that help you exprinces the best P2P that to offer.
http://www.klitesite.com/
If you got that much spyware and ad-ware install, I recommend you backup all important files and just do a full reinstall (format and reinstall) the system. A clean start. Before you install any software, ask around if it got spyware/adware before installing. It will save you the trouble.
Ju Leon...