Will you people please stop spreading these lies, your just repeating what someone else said without any knowledge of current hardware prices. The absolute min your going to spend and have everything you need including a monitor, OS and input devices is 800$ and it will not run Oblivion well. If you want a rig that's going to be upgradable, last you 5 -7 yrs, have a decent size monitor and run Skyrim at max guaranteed it's going to cost you between 1100-1500$ depending on CPU, GPU and monitor choices. And that is building it yourself not buying a pre-built.
You're out of your mind. I was dream-shopping on Newegg the other day, and I compiled a complete list of parts, including Windows 7 Ultimate, and the total price tag was 837 bucks, and I know it would run skyrim at max settings
GTX 460
8 Gigs of DDR3 Ram(2066)\
i5 Quad Core 3.3 GHZ Processor(might have been a 3.0)
750w Power Supply
A nice motherboard(don't remember it's specs) that was compatible with i3, i5, i7 Processors
1tb Harddrive
Blu-Ray/DVD Drive
Windows 7 Ultimate
That rig will play any game currently out and due out in the next year at max settings, or so damn close it's not worth mentioning. I did have a notepad with all the links, but comp reset a while back and I hadn't saved it so I can't show the links. And honestly, I personally could salvage my Harddrive and Power supply from this computer and save myself a bit of money(I think it dropped it down to 700 dollars)