I bought the 400 dollar Xbox, but i cant play the original Xbox games..... How can I?

Answer 1

Here is a list of games that you can play at this time. They update it from time to time as well. You might have to update the software on your XBOX 360 to get some of them to play though.

http://www.xbox.com/en-US/games/backwardcompatibilitygameslist.htm

Answer 2

you need the platinum edition