you need a steam account to get the orange box if you got it for pc since he already had hl2 he gifted it to a differnt steam account.
they all come with the same games just hl2 has been out on pc for such a long time most people had it so steam allowed you to gift it to someone who didnt have it.
The 360 version has Half Life 2, Half Life 2: Episode 1, Half Life 2: Episode 2, Portal and Team Fortress 2.
Every1 just take that http://www.steampowered.com/ati_offer1a/ it gives hl2dm, =) i got acc with cs anthology and hl2.
I love the orange box, such a good idea by steam to bring out the orange box before the TF2 full release.