Please see forum rules about double-posting. That's 3 identical posts!
http://www.gnutellaforums.com/announ...?s=&forumid=29
Did you ask your school if it's ok to use LW on their network?
The beta 4.3.3 has better firewall to firewall transfer abilities:
http://www.limewire.com/english/content/beta.shtml
Leave LW on for some time to try to connect.