The Brick wall means you are behind a firewall and that could be the reason your searches are not comming up with the results you want...
The Chat function only currently works in the Beta version and if you are running the Beta the firewall could be blocking your ability to chat...
Could you supply these details please and we will see if we can get you connected properly...
http://www.gnutellaforums.com/connec...-you-post.html