I'm assuming it's the same basic layout for the PS3 and as far as PC goes...I have no knowledge or a single idea, of what the controls would be.
@Dragonborn1...yeah they do do a power attack when you are wielding whatever it is you're wielding but Proditus is probably right...when you're not wielding anything you could hold desired trigger until wielded.
Off topic with a little bit of randomness.......I really wanna see a damn dark elf :tes:
I'll give you the starting layout. Todd has mentioned that the mouse buttons will be the equivalent of left and right triggers. You can also probably assume that "WASD" will be the basic movement layout, with Q and E allowing strafing perhaps? I don't have Oblivion or Fallout 3 on PC unfortunately, so I can't really make any other guesses.
@Blacksmithvhan- I'm under the impression the sprint button will only activate when a person is moving. Perhaps the LB will still be used as the grab mechanic to manipulate items and corpses (I doubt they would take it out).