After you've searched, try to download a file that has lots of hosts. The more hosts, the better speed you'll get. Also try to download a file that's got 4 stars, these hosts aren't firewalled.

You do have to be a little careful with T3 hosts though
http://www.gnutellaforums.com/showth...164#post104164

There are some tips here for maximising down/upload success
http://www.gnutellaforums.com/showth...threadid=17321