...do you mean MacBook Pro by any chance? No such thing as a PowerBook Pro. If so, no, not much is compatible between the 17" PBG4 and the MBP. They are even slightly different dimensions.
Was it exceptionally hot when it died? What was the machine doing at the time?
Which MacBook Pro is it specifically? as in Core Duo or Core 2 Duo, and then also what speed.
Try reseating the RAM, always a good place to start.