No because they have made new maps and it's an entire new game, also it's before the first halo we have ever played.
You buy the map pack at marketplace or buy halo anniversary
The noble map pack.
You can't. Legally, anyway.
there are three
Defiant Map Pack
Two multi-player map packs. Noble Map Pack and Defiant Map Pack
March 2011
No, I'm sorry but you cannot spawn computers or laptops in halo reach. You may be able to on some of the Noble Map pack or Defiant map pack maps as I have not played them, but I doubt it as well
muythic map pack. that comes with HALO 3: ODST
it is downloadable content for the game and can be purchased on xbox live
The new Noble Map Pack
1200 gamer points, or around 10$