Preferred Website(s) for Parts: Newegg is preferable
Country of Origin: USA
Parts Preferences: No care, I've been out of the loop for too long to know any better.
SLI or Crossfire: Eventually
Additional Comments: A copy of Windows is required. I Would like to be able to play BF3 and other taxing games on higher settings, so perhaps one good gpu now and I can SLI another at a later date when I get more money. It's been several years since I've followed anything hardware related so any help is appreciated.
Well with your CPU you definitely want an i5-2500k, theres nothing else that really compares at this budget. I would also get 8GB of 1600Mhz RAM, brand is up to you. If you want to overclock and SLI in future then i would get a board that supports it in at least x8/x8 speed and not x16/x4. With your graphics i would recommend a GTX 560Ti at this budget, the AMD alternative would be an HD 6870 or HD 6950. If you want to SLI in future then i would get a 700W+ PSU. A SSD would be great as a boot drive but only get one if you want fast load speeds, they are quite expensive and don't improve FPS. With your hard drive i would get a Samsung Spinpoint F3 1TB. They come very highly recommended because they are fast and cheap. If you need a monitor i would get something at around 22-24'' and below 5ms.
Sorry about the big block of text but i hope it helped.