[quote name='banzaiwolfe']I don't think that's going to work the way you think it will...[/QUOTE]
Yeah, I am guessing there will be a relationship between your ps3 and pc steam accounts, and one code will activate the game on both. You probably can transfer the ps3 disk after that, but doubt you will be able to access online features without the steam account.
I could be wrong, but I wouldn't buy the ps3 version fully expecting to use the pc version and freely transfer the other..