So you've got jazz.logicware.com in the registry? Hm...if so I'm not too sure. Perhaps a typo in it or something.

Try Alberto's JJ2 1.23 exe file with the listservers built in, you can get it on J2O for HH98, 1.23 and TSF. Backup your old exe first. But basically it should speed up connections to list servers and sometimes hosting games, and in some cases it allows people to connect to the listservers properly.

Also if you have a firewall set up, you may not have given JJ2 access to the internet, forgetting it and giving only TSF access. If you have a firewall, check to make sure that JJ2 is given access to the ports and the net as well as TSF.