Hi,
Okay, to reply to a message go to the bottom of the message and hit Quick Reply. To jump to diffrent forums go to the bottom of any page and you'll see a place called Forum Jump, where youc an select forums to jump to. At the very bottom of any page (VERY bottom) there will be a rectangle that says something like SUMMER FUN. Click on that to change the backround of Be Tween Talk, such as a Harry Potter theamed page (Muggled) The rules are: No bad words, no pictures of you as your avatar, no saying anything mean, no talk about weapons. That is pretty much it for that. You can also click on your profile to change that kind of stuff, but it seems you already figured that out.