where to go for filesharing we cannot help you with. Other than that though, here goes my response....
As far as an IRC client, I'd use <a href="http://www.mirc.com">mIRC</a> or <a href="http://www.xchat.org">XChat</a>. Both are quite good - just depends what kind of interface you prefer.
There is a TFP channel and it is located on irc.irvingnet.net and the channel name is #tfp.