Halo 3: ODST Question ;)

Hey everyone. We all (or most of us) know of the upcoming release of Halo 3: ODST. Which includes;

• New Campaign.
• Same matchmaking as Halo 3.
• All Map Packs, on a second disc which is included.
• Halo Reach Online Beta Invite.

Now, my question is, since the map pack is included on a second disc, meaning you install it (just like if you downloaded them from market place) does this mean we can play them on Halo 3 without the need of purchasing the maps?

I ask this because I like to get ALL the achievements of every game I play. So I need to know how much I need to save up for everything total.

nicatronTg said:

Yeah, MP is included on a separate disc. Imho this isn't the Xbox 360 forum though.

I know that it is on a separate disc, my question was would we be allowed to use those maps on Halo 3 (not ODST) since it is the exact same maps as the ones you get for Halo 3 on market place.

Oh and I know its not the X360 Forums but its the gaming forums so its all good. :)