You'd need a copy of windows.
You'd need a copy of windows.
Then you would need to decide how you want to install it.
I'm using parrallels but want to do it via bootcamp when I have attained a legal version of windows.
You have to pay for parrallels which effectively runs windows within OSX. Integrates really well actually, but doesn't perform very well (takes up a lot of ram etc when in use).
The easiest/free way to do it is boot camp.
Open it up in OSX (already installed, search for it in spotlight), install windows via that.
Then the mac is switched on it asks you what operating system you want to run.
Boot Camp can be found under Applications > Utilities > Boot Camp Assistant.
It doesn't actually ask you which OS you want to boot into. You have to hold the Alt key down for it to ask (or am I doing something wrong?!)