Is it possible to install Counter-Strike on a MacBook Pro? If so, how?
You cannot install the original Counter-Strike 1.6 on Mac without Windows emulation software. You can however install Counter-Strike: Source, that's the revamped CS that has been ported to Source engine (the same one as used in Half-Life 2). Requirements are:
Minimum: OS X version Leopard 10.5.8, Snow Leopard 10.6.3, 1GB RAM, NVIDIA GeForce 8 or higher, or ATI X1600 or higher, Mouse, Keyboard, Internet Connection
Update: As of 2015, I'd recommend newer Counter-Strike: Global Offensive. It supports Windows, OSX and Linux users on same servers.
Assuming your system can handle it, you can install it off of steam.
The info is found here: http://store.steampowered.com/css