Have you read it? Did you read the support files at T-Mobile's website? How do you expect anyone here to help you if, at the very least, you don't say what model of phone you have?
If you're asking for technical help, please be sure to include all your system info, including operating system, model number, and any other specifics related to the problem. Also please exercise your best judgment when posting in the forums--revealing personal information such as your e-mail address, telephone number, and address is not recommended.
mr bright