Doesn't that display only run at 1680x1050? What about it requires OS X 10.2 to run? I've definitely used Mac OS 9 at that resolution before. What would prevent you from using it with an Intel Mac?

If there is actually something about this display that makes it compatible only with a narrow range of Macs, I'd get another display because that just sounds like all kinds of trouble. I would be surprised if there was, though. Unless it has an ADC connector, it should just be a normal LCD monitor, and if it does have an ADC connector, the adapters aren't hard to get.