I recently got a macbook and im still learning how to use it. I need to run some programs on widows and i was told that i could run windows on my mac. I have done some shopping but all the windows operating systems but i am not sure which ones i can or cannot install on my mac. I have a budget of only $100 for this. Could you guys tell me where i can find any windows operating system for less than $100 that would work on my macbook? i am new to the whole OEM Windows thing so im not sure if i should buy a OEM or a retail one which are much more expensive. Thanks so much for the help.