if you don't mind buying used, I've got a complete setup I could sell to you for $939.99 shipped? (within lower 48 of US)
windows 7 home premium.
cpu intel core i5 750 quad core
motherboard gigabyte p55a-ud3 w/ USB 3.0 and SATA 6 Gbps
ram 2 x 2GB corsair dominators 1600 mhz
video XFX GTX 275 w/ lifetime warranty.
psu corsair HX650W 80+ silver and modular cabling
hdd western digital 500GB RE2 enterprise class sata hard drive
19" 1440 x 900 widescreen lcd monitor brand can't remember right now, but generic brand from best buy.
2.1 speaker set - also generic brand
keyboard - logitech keyboard, forgot model.
mouse razer diamondback 3g
case- random case