I am trying to play counterstrike on my MacBook (2Gh Intel Core 2 Duo). When I try to download steam from valve's website (steampowered.com) I get this "Steaminstall.msi" document, which OSX prompts me to find an application to open. When I try to download counterstrike and am prompted to download steam, I get an error message that says steam is not registered protocol. I have searched forum threads for the answer to this protocol question, and steam's website simply states that this problem has been solved and to just try again - and that steam isn't supported for mac! How is this possible if people are playing cs on mac? My understanding is that in order to install cs you need to use steam. What am I supposed to do? Can someone walk me through the process of getting counterstrike up and running? This very website states that cs can and does run on mac using crossover - so how do I do it???