Skully: CoD4 doubles on CG - Help plz...

I decided to register me n my buddy for a doubles ladder on CoD4.
Me being the idiot I am can't remember what a handle is. Is it my PSN ID? Do I write just my ID or me n my buddy's?
Thanks in advance.
-Skully

u have username.....for cg username

handle is ur psn id or gamertag

Ok thanks. But it's a doubles ladder so do I just write my psn ID or my partner's too?

Never mind, I figured it out. Thanks for the help.

u do urs then inv him