Me and my twin brother are pretty good at Halo 3 as well. Send us a friend request and we will play some next time we get on (I've been playin COD4 more of late)
My (Chris) Gamertag: FatElvis24
His (Joe) Gamertag: MasterNinja33
I signed up for halocal.com and since my rank sucks, my only claim to fame is that I have the 6th best Kill to Death ratio for anyone signed up in Tennessee......my brother has the 4th best. Gigantor14 on the list at 5th is also our best friend who plays w/ us.
http://halocal.com/HaloStats.aspx?type=state&state=TN&Button=GO&sortby=KD