Well now !!!
1st
We need to know a bit more about what you are using...
What p2p 'client' - LimeWire or BearShare or whatever...
Plus
What computer type and Operating System (Mac or Windows PC or Linux or...)
If you are using LimeWire, then have a look at >
http://www.gnutellaforums.com/showth...threadid=25022
If the above link does not help you, have a search around the forums for numerous other posts regarding the same 'problem'...
And, relax ! You probably have not actually 'lost' anything... Hope not !