Can you only use your server?
I can't do that, and personally I find that to be a nasty trick to try and get IRC users. If you want to write hacks don't require them to use your services. What happens when your server is down?
If you want to see a nice Java IRC Chat client check out
http://www.jpilot.com. You can customize the look of it and choose what IRC server. It is shareware thought, but registration is only $40.