Hi,
Did you have any luck figuring out the chat options ?
Sometimes it's easiest to go in when it is empty and just explore around with the settings in there.
Or just have 1or 2 friends go in with you to help as you set it up - it easier to explain while in the chat rooms with you.

Basically you hit the Options button and click on the Tabs to set how you like it.
If you click the fonts tab first you can make it bigger so you can see the rest of the settings better.