AccuTracking

I can login at nextel.com no problem Then When I go to MAM it asks me for a user name and password again. When I retype it in I get this:
Authentication failed due to NextelException :: Error#4905: User does not have the required access level for this application.

Any help on this would be appreciated. I just signed up for 1mb of data
today.

Have you signed up on the MAM page? If you did, this appears to me to be a problem of their MAM site.