To register, simply click on the Register link.  Choose a user name which you can easily remember, and fill in the other required fields.  Your password will automatically be generated and emailed to you.  You can change your password at any time by choosing the Member Services option and then clicking the Change Your Password link.

You only need to register once,  as you can change your user information at any time by choosing Member Services, and then clicking the Edit My Registration link.

Note: There may only be one account per email address.  The system will not let you create more than one account with the same email address.