yes but i dont know how
by looking at www.gamewinners.com
You can't unless you hack them.
http://hubpages.com/hub/Halo-3-Armor
To unlock Recon armor in Halo 3, you originally had to beat all of the VidMaster achievments, but the armor is now available to all players. To unlock the recon armor in Halo: Reach you had to pre-order the game and you would get a long (25 character) code for the recon armor DLC. To unlock the recon armor in Halo 4, you had to either pre-order the game or simply buy the armor with your in-game credits.
go to http://hubpages.com/hub/Halo-3-Armor
nope but you can hack or if you have a friend who works at Bungie he could give it to you. Also, you can now get Recon armor by completing all of the Vidmaster challenges in Halo 3 and Halo 3: ODST and then going to Bungie.net to unlock it.
you get all the vidmaster achievements on halo 3 and halo 3 odst
No.
no you will have to somehow hack the servers to allow your armor on and then convince the admin to not delete your armor and not perma-ban you
All the armor are the same it's just the way how you want to look WRONG! the best armor in halo 3 is the recon armor and you have to be a member of bungie OR get all 7 vidmasters in halo 3 ODST
There is no glitch.
By getting skulls.