This may seem like a dumb question, but it's an area I know nothing about. My brother-in-law has been playing Call of Duty: Black Ops quite a bit on his Xbox 360. I recently got the game for my PC, but I'll admit, I don't normally play any games online. So, that leads me to my possibly stupid question.
Is there anyway the two of us can play online together? Or, do you need to be on the same platform, or at least on a console to achieve this?