If you are using the PC version you can use a program called halo custom edition, just type it into Google. Unfortunately there is no easy way to mod on a console.
Yes, you can mod campaign mod on the Halo trial.
no there is no mod to become Jorge in any Halo, I wish there was to be honest with you :]
There is no Halo 3 mod for Halo Trial. Halo Trial is one of the hardest versions of Halo to mod. There are however, custom maps for Halo Custom Edition. To get Halo Custom Edition, you need to have Halo: Combat Evolved installed on your PC, you also need your CD key. You can download Halo: Custom Edition free.
You can learn how to mod, and use the Ghost, Tanks, and any other vehicle or weapon from both Halo PC, and Halo Custom Edition. Halo Custom Edition has vehicles and weapons that people made and put in the game. To learn how to mod, go here; http://www.modhalo.net
No. It won't let you for suspicion of trying to mod the game.
you can get grunt mods for halo trial but not halo pc. If you want a grunt mod for halo pc, then you will need to mod it yourself with HMT v3.5, Spark edit v3.02, and/or HHT v5.
it's ileagal to be a mod you idiot
You mod the game using modding programs so you can get armor for free. I don't know what programs you need for this mod but just put in on google get armor for free on halo reach mod. IAM sure something will come up.
Currently there is now way possible to mod with a USB in Halo Reach online.
the only way to mod in halo is to get a modded 360
You can't
a mod