Brakes problem
1997 Geo Prizm 4 cyl Two Wheel Drive Automatic 100000 miles

I am trying to remove the brake rotor, but it seems to be "fused" to the hub. How can I remove the rotor without destroying it?

Spray around the studs and behind with PB Blaster. Use a large rubber mallet and smack it while rotating the rotor.
It should eventually come loose. Clean ALL traces of the PB Blaster off the rotor if you intend to reuse. Clean the hub also when you get the rotor off.