Just enter whatever you want for a screen name in the chatroom, and then hit "enter."
Once in the room, all you'll need to do to post YOUR text for all to read is hit the "enter" key on your keyboard.
If, for some reason, you would like to print up your dialogue box before, during, or after a
LIVE chat, just go to the bottom and click on the "Save chat-transcript" button. From there, you should get a screen
that will show all of the dialogue entered in the room since you joined in on it. Simply select whatever text you wish
to copy, then copy and paste it where you want to.