Welcome to the Forums. LoL
Almost had a Ruff start right out of the Shoot. Huh....
Now to your issue. The Gnutella Network is Loaded with Viruses, Worms, Trojans, Spam, Fakes, and Corrupt Files. Prolly what you're finding.
Here are a few Links that will help combat some of these issues and will show what to look out for.
* WARNING: Viruses on network you should be aware of ! * http://www.gnutellaforums.com/new-fe...-bad-file.html
This will get you started.