OT : I haven't heard a case of someone getting banned for "modding" gamerpics.
If you're searching for a program to get gamerpics I suggest to use Horizon.
You won't be suspended for using Horizon's 'Gamer-Pic Pack Creator'. Just make sure you're only using/downloading gamer-pictures that are available in the Marketplace, otherwise you will most likely get reported and receive a suspension or have your gamer-picture privileges revoked.
I used one for the first time sometime around the middle of 2010 and I haven't gotten banned. I don't think you'll get banned for it since I haven't heard of anyone else doing it. Don't fuck with modding avatars though, a few of my friends got permabanned for that.
@OP i hope you get the post count you want with another LQ pointless thread. And you won't get banned, i've used the injector for 3 years now and havn't received one.