Im currently boosting halo 3 accounts for paypal, I am on level 46 with my account although i dnt realy play team slayer anymore(Ranked)
I will boost you in ether doubles or team slayer for a ammount via paypal, You will have to pay up front, Thease people can vouch for me:
Hitman
Crazy Bartender
Thouse 2 both use this so they are easly contacted, PM me here for more details :]
Ross