The connection settings in the new 0.6.2 version look pretty straight forward to me, and are a great improvement when compared with the earlier versions.
But before you start to adjust, make shure you got an global idea of how the gnutella network works.
The
Knowbuddy's gnutella FAQ is a good place to go .
I suggest to just play around a bit with your bandwith settings in order to get the performance you want .