Dont have a TXB account?
If you havent yet registered on TXBs forums, not only should you reconsider some aspects of your life, but you also need to quickly go to this page to open an account on TeamXbox.com. There you will have to create a username and then associate your Xbox Live gamertag to it, if you have one.
If you dont have an Xbox Live account yet, you can still use TXBase, but in this special case, the URL for your TXBase page will simply use a number until you associate an Xbox Live gamertag to your profile.