Which intergrated chat options do we have?

[jisung]

I'm currently useing outside chat server for my vB forume and my users don't mine to put their username & password one more time to join a chat room.
But I hope that I can show how many peoples and who are in chat room on main forume so encourage users to join chat room. I don't have any independent server to install chat server proglam in it.
Which hacks and softwares can VB2.0 users use for this purpose in this case?

as i already posted in another topic... would be ag reat thing this...