I'm sure you can play on the Mac, many people have reported to me that they played on Macs succesfuly. I can't remember which technology they used (parallels perhaps?) but this game doesn't have any special graphics requirements. If you can run ordinary windows desktop applications, you should be able to run UoC.
I don't have anything new to say on the native port. We don't need
donations I think, it's more a matter of time