Well good luck going to sprint usually they are jerks and won't help you or they will help you and charge you for it. Your best bet maybe going through HTC themselves. As far as the brick, you currently have a $290 paper weight or door stopper. But you can also use it as a Sprint Crime Deterrent device....
http://www.youtube.com/watch?v=G4O4f6FKYyc
Again good luck