Simply enter the code where you would enter a code for your Xbox Live Subscription. Hit the guide button, and scroll over to the "Marketplace" and the Scroll down the the second choice "Redeem Code." Enter the code there.
yes and no?
there is no codes in halo 3 ... -.-
no
Yes. There are a lot of mods for Halo and Halo Trail on PC.
Google.
nowhere because there are no cheat codes for halo 3
THIS IS HOW U GET IT, GO TO [HALO FREE TRAIL VERSION] CLICK TITTLE AND CLICK DOWNLOAD, WAIT TO DOWNLOAD, AND U ARE READY TO GO // THE CAMPAIGN ON HALO TRAIL IT IS THE CARTOGRIFER
yes
there are no cheat codes. i am an inheriter and i have done every thing in the game and no cheat codes are on halo reach.
you could buy it or get it illegally halo reach code generator. very very illegal it generates codes
Not really. There are a few Easter eggs but no codes.
This must be a very old question, because Halo 2 has already come out, along with Halo 3.