@Topic:
Can you get one with an academic license?
Though as others have said, you should really contemplate what you need.
Otherwise, and I am just saying this because I find the Windows packaging scheme idiotic: Maybe you can really consider a different OS.
Heck, you could get a minimal Win7 for games and like but do your work on a dual-booted Linux install.
You could even virtualize the bought Win7 inside of the Linux install.
@OS war:
I also grew up with Apple, but won’t touch their products any more. Not because of hw/sw, but because of their politics.
Not to mention OS-X IS some kind of derivative of a *nix derivative.
I personally would recommend GNU/Linux to anyone that does not have really special requirements.
And since Ubuntu does not have ‘an Office’, they shy away from it.
Most of the time people only look for products, not needs.
ala ‘You don’t need Word, you need a word processor.’