HT1338: OS X: Updating OS X and Mac App Store appsLearn about OS X: Updating OS X and Mac App Store apps
Currently Being ModeratedFeb 1, 2013 12:41 PM (in response to hchscoachtom)
The first question you must answer is what version of OS X can it support?
Either give us more details on your Mac so that we can check it out or you can check it out for yourself.
Currently Being ModeratedFeb 1, 2013 12:48 PM (in response to hchscoachtom)
That will run Snow Leopard which is a necessary step to anything beyond.
So purchase a Snow Leopard install DVD from Apple.
Then backup your data and upgrade.
Once you get to Snow Leopard you can upgrade to Lion by purchasing it from the App Store.
You MacBook will not be able to run Mountain Lion.