I bought the PS3 version for my brother. Linked it to the PSN account. I have the Windows version. When the PS3 version is opened, his account is filled in on the ID line and it's greyed out. I thought I'd be able to play my account on the PS3 when someone else is using the computer. Is this intentional that I won't be able to log in my Win account on the PS3, or is there a way to change the ID?