Thanks for the replies all... I didnt pay much for the amp, so I'll probably take TomDac advice. I was really looking to use it for my Klipsch center. My ML's are powered by a Yamaha M-60 and it does pretty well.
The real answer is "it depends..." Sometimes the power stage is designed for both 110 and 220 markets, so it could be something as simple as moving a few wires, changing an internal jumper or switch, or pulling voltage off of a different tap on the power supply transformer. On the other hand, they might have used region-specific power supplies for the designated market, which generally means that you can't make the conversion without swapping in a replacement supply. An owners' group will likely have details as to whether it's feasible or not.