Actually, you cannot change your BlazerID once it has been set. However, you can use the Mail Only Alias option in place of your BlazerID.
To set your mail alias, go to the electronic phonebook: http://www.uab.edu/phonebook. Click on the Change Information button.
This will bring you to a login screen. Enter your BlazerID and password.
Once you login, you'll see a screen listing your information. Scroll to the bottom of the screen to the last item on the page: Mail-only aliases. Click the Add/Change link.
In the box that appears below, enter a new alias and hit Change! Aliases can be up to 16 letters or numbers in length, including upper and lower case. Note: Aliases are only used for mail delivery. You will still need to enter your BlazerID to access the systems across campus (i.e. - Oracle, BlazerNET, Banner, Blackboard, etc.).
Once you've entered your new mail alias, you'll need to select the display button out beside your new alias and hit Change! again. Then click the View Entry button at the top of the page to review your changes.
Your mail alias is now setup. Remember to continue to use your BlazerID, not your mail-only alias, to login into systems across campus.
As noted in the Phonebook registration instructions, it is very difficult (if not impossible) to change a BlazerID/Phonebook alias once it has been set. The BlazerID is used for authentication by a number of services, as well as the forwarding mechanism for your @uab.edu e-mail. If your BlazerID changes, then all these services have to be changed as well; and all e-mail to your former @uab.edu address becomes undeliverable, creating headaches for your correspondents and the maintainers of any discussion lists to which you belong. If you simply desire a new @uab.edu address, you can accommoplish this by registering a mail-only alias, as described here.