How to remove SKI-ROM from HTC Pro

[rosh5661]

My daughter upgraded her spring phone and gave me her HTC Pro. Her husband put SKI-ROM on it and sprint can't do anything about putting back their software so I can use the phone under my number. I spent 4 hours on the phone with spring and drove 1/2 hour to the sprint store to be told I needed to find someone smarter than them to reprogram the phone, if it is at all possible. Does anyone have any idea if it is possible. They tried to to do a hard reset at the store but it wouldn't do anything. Thanks.