RB runs great through Parallels 4.0 in a virtually seamless integration with OS X - screen shot is a bit large at 1600x1800 but I couldn't lower it without destroying clarity.
My Mac Book Pro specs are only 2.16GHz Intel Core Duo (early model Mac Book Pro) 17" LCD, 2 GB 667 MHz DDR SDRAM, 120 GB drive @ 7800 RPM.
....Sorry, ...thank you
so i will estimate that iMac with parallel 5.0 will run GOOD