Weird answers.
As the Benchmark shows a Radeon 5570 can even handle Skyrim at high levels with AF turned on. His resolution will be even lower then that of the benchmark! So all he needs is a cheap 5570 and an i3 to be able to handle this game at HIGH, maybe even Ultra settings with that monitor.
Which, is very doable at 600$.
Especially if you get some great deals on RAM / HDD and other components during Black Friday.
I would go with an I5-2400 though, thats what I have and the thing will NEVER be a bottleneck lol. Not for a long .. long .. long time. Was able to put together a system with a 500w power supply, for future upgrades, the i5-2400 3.1Ghz now overclocked to 3.9Ghz ( with built in mobo software, one click and a reboot and viola, overclocked ), HAF Cooler Master case, 8GB of DDR3 1333Mhz, 320gb HDD, 24x DVD-Rom, 1600x900 20 inch monitor, etc. for less then 600$.
Doable I say.