You can open our own chat room from the 'home' screen or from the char room browser under the 'my rooms' tab.
From the 'home' screen
Click on the 'home' icon on the bottom of the pal list area.
To open your room click on the 'open room' button in the 'my room' panel.
From the chat room browser
Click on the 'rooms' icon on the bottom of the pal list area to launch the room browser.
Click on the 'my rooms' tab.
If you have created a chat room it will be listed here. Click on it to enter.