Read this thread with some interest as I had the very same problem(s) when I first started out with torrents.
To cut a long story short (lots of experimenting with clients and firewalls) I binned Norton 2004 and Azureus (sorry CD1986 it ain’t the best client for this situation) and loaded Zone Alarm Security Suite and BitComet 0.56.
The good thing about BitComet is that it can automatically configure NAT/Fireqwall settings.
Before BitComet trackers were seeing me as “not connectable”, since the change all is well. Take the headache out of port-forwarding and firewall programming - change to BitComet