TXDad, the only solution is to buy a used TMobile MyTouch$g and then unlock it or pay someone to unlock it. Usually about $40. It will then work on AT&T. The MT4G has a front facing camera and an app called Qik Video Chat. It works the same as the IPhone Video Chat.
I unlocked one for a friend and he uses it all day without issue. I use my MT4G on TMobile and we can vid chat without any problems.