I've tried on 3 different computers over the last couple days, and it seems there is a website issue. I am trying to "request transfer of billing responsibity from someone else". Specifically:
MyAtt -> Billing and Usage -> Transfer Billing Responsibility -> Request a transfer from another person. The "Request a transfer from another person" link does nothing. I've tried on 3 machines (Windows XP, Windows7 64 bit, and a Mac) so I don't think the issue is on my end.