how do u get more levels to build on halo 3 360?

[joshua p]

i saw a red vs blue thing and a grifball thing and i cant build thoose things how do u

do u need live to get that stuff + how do u get more money or items to build with

 

[Steven]

if u have xbox live, u can get the heoric map pack for free
its 3 new maps (one of em u can edit everything
i think the map ur lookin for is foundry