Upgrading graphics card to fit in pci express x16

[wdphillips2]

BUDGET RANGE: USD $150-225 Before Rebates for the PSU and GPU upgrades.

USAGE FROM MOST TO LEAST IMPORTANT: I play RPG games, and MMO's, I'd like to be able to play the upcoming Guild Wars 2 at high settings with 60+ FPS.

CURRENT GPU AND POWER SUPPLY: Graphics Card name: ATI Radeon HD 4350 ; 300W stock HP PSU

OTHER RELEVANT SYSTEM SPECS:
System Model: NY553AA-ABA e9220y
Processor: AMD Phenom II X4 910 Processor (4 CPUs), ~2.6GHz
Memory: 8192MB RAM
Motherboard
H-RS880-uATX (Aloe)
I think the Hard drive is 5400 RPM 1 TB.

PREFERRED WEBSITE(S) FOR PARTS: whichever is trustworthy and has good prices.

PARTS PREFERENCES: Whatever the experts would put in their PC's.

OVERCLOCKING: No

SLI OR CROSSFIRE: I don't think I need a dual-card setup, just a single card.

MONITOR RESOLUTION: 1440x900

 

[refillable]

http://www.newegg.com/Product/Product.aspx?Item=N82E16814102908
http://www.newegg.com/Product/Product.aspx?Item=N82E16817207013

 

[DM186]

^+1
And here are two more cards to look at. Good luck to you. Just remember that you have to up grade your PSU to a 500w one. Brands should be Corsair, Antec, Seasonic, and XFX brands.

http://www.newegg.com/Product/Product.aspx?Item=N82E16814150561

6850 vs 6870
http://www.anandtech.com/bench/Product/291?vs=290

http://www.newegg.com/Product/Product.aspx?Item=N82E16814130623

6870 vs 560 ti
http://www.anandtech.com/bench/Product/290?vs=330