The parts dkim1359 posted aren`t bad. I would throw the dvd burner out. I assume you have one and these things don`t need to be upgraded, imho.
I woudn`t pick a mobo from asrock.
Get something like this:
A better CPU cooler than the hyper 212 would be nice but more expensiv.
The RAM looks fine. These G.Skill are unexpensive and great value.
For the PSU i would recommend Thermaltake, OCZ or Corsair. 550W will do but better 600w.
The only thing that is sad that you will have to cut some money for the OS.
A 6950 would be a good choice.
So the main parts would be: the 2500k, a 6950, the RAM from G.Skill, a Gigabyte P67A-D3-B3 and an os. The rest of the money should be enough for the other parts. The most important parts left would be the cooler and the PSU. I would cut on shiny case and invest that money into a good cooler/PSU! You can`t live without them but without a shiny 300$ case!Edited by Mr.Eiht - 4/26/11 at 7:09pm