Linking an external chat applet to user database

Hi

I was wondering if anyone can help.

I would like to add a Java chat room on a new page. I have found a suitable Chat applet that supports auto login for users using data from the forums user database.

I would like to use this function but it needs a URL that requires the user to be logged in to use. If that makes sense. The chat program then uses the users login name for their chat username.


Has anyone done similer with their forums and have any tips for me?

Cheers

Simon
I need to know what url i need to use.