Not being able to reach the site via 6346 means that your ISP is blocking this port.
Try to change the listening port to a higher range, such as 64059, 47058, or something like that.
You will have to configurate your firewall accordingly. If the ZoneAlarm Pro is the smae as NIS follow this link on how to do so:
http://www.gnutellaforums.com/showth...threadid=30505
That might do the trick.....