tips on a build

[FNH]

I'm looking for a mid-range gaming desktop that I can play most games within the next couple years. I'm not too into having maxed out settings but it'd be nice. Anyhow here are the current selections let me know where I need to upgrade and where I can downgrade and not lose much but gain in cost effectiveness. Thanks.
# CASE: New! CoolerMaster Elite 310 Mid-Tower Case with See-Thur Side Panel
# Extra Case Fan Upgrade: Extra Case Cooling Fan (2 x Fans)
# POWER SUPPLY Upgrade: 600 Watts Power Supplies (SLI Ready Power Supply)
# CPU: (Quad-Core)Intel® Core™ 2 Quad Q9550 @ 2.83GHz 1333FSB 12MB L2 Cache 64-bit
# COOLING FAN : XtremeGear Ultra Triple Heatpipes Cool Copper Heatsink CPU Cooling Fan (Extreme Silent at 20dBA & Overclock Proof)
# MOTHERBOARD: MSI P7N SLI-FI 750i SLI Chipset LGA775 Supports LGA775 FSB1333 DDR2/800 Mainboard w/GbLAN, USB2.0, & 7.1Audio
# MEMORY: 4GB (2GBx2) PC6400 DDR2/800 Dual Channel Memory (Corsair or Major Brand)
# VIDEO CARD: NVIDIA GeForce GTS 250 1GB 16X PCI Express (EVGA Powered by NVIDIA)
# VIDEO CARD 2: None
# VIDEO CARD 3: None
# MULTIPLE VIDEO CARD SETTINGS: Non-SLI/Non-CrossFireX Mode Supports Multiple Monitors
# LCD Monitor: NONE
# 2nd Monitor: NONE
# HARD DRIVE: Single Hard Drive (1TB (1TBx1) SATA-II 3.0Gb/s 16MB Cache 7200RPM HDD)
# Data Hard Drive: NONE
# USB PORTABLE DRIVE: NONE
# Optical Drive: Sony Optiarc BC-5100S 5X Blu-Ray Player & DVDRW Combo Drive (Black Color)
# Optical Drive 2: NONE
# SOUND: HIGH DEFINITION ON-BOARD 7.1 AUDIO
# SPEAKERS: 600Watts PMPO Subwoofer Stereo Speakers
# NETWORK: Onboard Gigabit LAN Network
# MODEM: NONE
# KEYBOARD: Logitech Deluxe 104 PS/2 Keyboard (Black Color)
# MOUSE: XtremeGear Optical USB 3 Buttons Gaming Mouse
# Extra Thermal Display : THERMAL TEMPERATURE LCD DISPLAY WITH 3X FAN CONTROLLER (BLUE COLOR)
# Wireless 802.11B/G Network Card: PCI Wireless 802.11g 54Mbps Network Interface Card
# Flash Media Reader/Writer: None
# VIDEO CAMERA: NONE
# PRINTER: None
# PRINTER CABLE: None
# IEEE CARD: NONE
# USB PORT: Built-in USB 2.0 Ports
# FLOPPY: NONE
# OS: Microsoft® Windows Vista™ Home Premium w/ Service Pack 1 (64-bit Edition)
# Windows 7 Upgrade Coupon: (Free Upgrade Coupon) Microsoft® Windows® 7 Home Premium ($29-$29 Mail-In-Rebate = Free) (64-bit Edition)
# FREEBIES: FREE! (Microsoft® Flight Simulator X Deluxe) Game
# Media Center Remote Control & TV Tuner: None
# SERVICE: STANDARD WARRANTY: 3-YEAR LIMITED WARRANTY PLUS LIFE-TIME TECHNICAL SUPPORT

[Minions]

I'd honestly go with a gtx 275/280 if you are planning on playing 2 or so years in the future. It is only about $30-50 more. (around 220-250~) I generally suggest staying within 3 tiers of video cards if you wish to continue on the card. There are exceptions of course. The current is gtx 295 -> 285 > 280 > 275 (280/275 are pretty similar in terms of performance) There are also higher spec/oc'd cards in each of those.