Obviously You have done Absolutly NO Research or know Very Little about P2P and the Gnutella Network.
So I ask, What the ???? are You thinking about ??? Might be a Good Idea to take a few steps back and get Informed.
Be careful with what you download - check file sizes & file extensions. See the threads below for more info.
Virus thread: Typical virus spam file sizes - Make a note of them (click on blue link to see).
* WARNING: Viruses on network you should be aware of ! *
Make sure that you're using a good AV program. Keep it updated & use it to scan all files that you download - before you open them. Which AV are you using? If it's not able to deal well with the viruses that you're finding, the second link above has more links to online scans. Or the post below has links to some good freeware.
http://www.gnutellaforums.com/330543-post11.html
If you are getting
porn results, you may wish to add certain words to the keyword filter:
Direct instructions to eliminate porn from results
Hope this Helps.