I just bought a MacBook Air and when I go to access my iDisk I get a pop up asking for my name and password. I don't have a name and password. If I click on Connect as: Guest it says that my iDisk is unavailable and to make sure that I am logged into my MobileMe account. I do not have a MobileMe account. Is there some way I can get rid of this? Or should I just ignore it? Any thoughts or help would be greatly appreciated.