Use Dev Mods (Developer kit). Get it from Microsoft or Bungie. Swap the Master Chief character tags and models with brute/jackal/hunter/ect. First person weapon models can be screwed up, recommend using third-person-view or manually edit the camera sticky position.
There are no cheats for halo 3 there are only mods and hacks
You can't install Halo 3 mods anymore to your xbox.
depends on what you're looking for. but most good mods in halo require a jtag. but a good site to look up mods is- http://www.thetechgame.com/
Aimbots do not exist for Halo 3. There are mods for maps though. If you put mods on your file share, it is possible you will be banned though.
its easy download it at filefront.com copy this where halo trial halo 1 halo 2 halo 3 mod mods ok?
There are no cheat codes for Halo, only mods.
sorry but other than mods you can't "cheat". you can use as many guides and tips as you like!
no but there might be mods where you might be able too maybe halo reach will let you
find it your self on youtube it will be much easier
No there is not a mod
If you have Xbox live. Maps on halo 3 for mods. go to bungie.net, make a profile with your gammertag and look for the mods under community. just simply type in mods under the map seciton. it will automatically download to your 360 if you click download on it. I recommend planet mod.
no, all there is not any flood in halo 3 odst firefight