Backwards Compatability?

I really wanna play Halo but it says i need a hard drive of some sort. what does that mean. thanks in advance Backwards Compatability?
That means you need the 360 Hard Drive to play XBOX games on your 360.  Pretty self-explanatory really.Backwards Compatability?
well i looked it up on google and all i found were like things to pirate games..where can i fin like the cheapest decent one? also would it act like a memory carde as well?
Buy a 360 hard drive, it's that simple. :|http://www.ebgames.com/product.asp?product%5Fid=802117

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