In BearShare it is possible to enable/disable most of the Tab Screens...
You at least want to enable the
Hosts Display Screen...
If after doing so you observe any 'Hosts' connections (should be 2), than you are connected.
If you see page after page of IPs scrolling upward without any connects, than you are not properly connected.
The above is no cure of any kind for problems, it's simply a basic test you can do yourself.
Also, try the
Port :6346 - Test If It Is 'Blocked' link in my sig below.
Last for now... GO HERE >>>>>>
http://www.bearshare.com/help/userguide.htm
BearShare has developed a really excellent help site...
It is not only of good use to BearShare users, but for all members of the Gnutella Network...
Have fun...
p.s. You did not mention whether or not you are possibly being restricted by an university administrator or perhaps security at the workplace... ???