I had to send my iMac back to have it's seagate HDD replaced under a recall so I'm stuck w/ my macbook for a while.
I copied my COD player profile to the appropriate folder ( User>Library>App Support>COD4>Players>Profiles)
When trying to load the multiplayer game, it says that my stats couldn't be loaded and were reset.
I'm dealing w/ the issue for now and created a new profile. I'm being booted from servers for "Punkbuster" issues. This wasn't a problem before; I don't understand the issue.