because you haven't bought the game RE-DEFINE YOUR QUESTION
You can play it while signed into xbox live, but you cant play with other people through xbox live on oblivion.
you can
no u cant you can be a vampire
you cant its impossible
you cant you have to steal them
you cant
you cant in oblivion without a mod
No, you can't.
You cant get her hair... Instead you have to get her tears
You should use something like wine to play Oblivion on a mac. You can find it very easy on google. That or just wait until Oblivion comes out for the Mac (if that ever happens).
Oblivion
you cant, its exclusive to the PC version