For the reasonable price of $4 (wow, no MS Points?), you'll be able to download both maps -- now redubbed Tombstone and Desolation respectively -- on April 17. Because the original Xbox doesn't use Billy Bucks, they've foregone the confusing currency conversion and settled on good old money. Similarly, because the old Xbox doesn't distinguish between Gold and Silver accounts, you'll need to be a Gold member to download and play. Hurrah for coming through for the old school Halo gamers: letting them play some heretofore offline-only Halo maps in Halo 2 on their aging Xboxen.