HTC Touch Pro 1 :(

I have an HTC Touch Pro I. I have had problems since I first bought it. Insurance was no good, b/c the moisture indicator is red. Phone "got better" on its own. I've had to replace the touch screen ($100) twice. Now the phone is totally out of whack... no phone service, TouchFlo 3D not working..... GRRRR. I have 11 more months in my contract.... is it possible to get an HTC Touch Pro I from someone else (possible a sprint user) and have CSouth activate it? Will I HAVE to buy a new CS phone and new contract or terminate contract?