The old Kazaa Lite was 100% spyware free.

Use Ares Lite. It's not pretty, but it's 100% spyware free.

That's if you're looking for a gnutella network. And limewire and winmx errmm... suck.

Really, the bittorrent network is way better then any of those. And make sure to have zone alarm ((free version is fine)) set up.