There's no dramatic differences with pro. You connect to 5 peers instead of 3 with the free version thus giving LW better quality connection & for most people better results.
I think perhaps you should see these hints: A well set-up LW can start to automatically continue its dwnlding after it's settled down perhaps 2 out of 3 times you open LW.
Optimising LW & Maximising Uplds & Dwnlds A (1st post only) & also
Part B which is even better & last & least are
search & dwnld hints. The latter one I've been thinking about re-writing for some time. That's just for playing it safe. eg- I show all speeds & qualities.
eg:
http://www.gnutellaforums.com/showth...028#post116028
Also make sure you're using the most recent Java: Update your Java
version 1.4.x OR
version 1.5 (take the JRE)