I'm a noob to PC gaming but I'm planning on buying a desktop gaming PC from a company that specializes in making them. My budget is $2,500 - $3,000.
I don't know what resolution I'll be using for gaming because I'm a noob. I plan on getting a 23" Samsung LCD display. I've already decided that I'm getting the Intel Core i7-920 (2.66 GHZ - Quad Core) processor because it is the only Intel processor that fits into my budget. Additionally, the PC maker will overclock it between 3.3 Ghz to 3.9 GHz.
How do I choose an option from each of the following components? Which brands are considered good?

I. Case (Chassis):
1) Cooler Master:
a) HAF 922
b) HAF 932
c) Elite 310

II. Motherboard:
1) Asus:
a) Rampage II Extreme
2) EVGA:
a) X58 Micro Edition SLI
b) X58 LE Edition SLI
c) X58 3X SLI
d) X58 Classified 3X SLI

III. Power Supply:
1) Corsair:
a) 750W TX
b) 1,000W HX
2) Enermax:
a) 1,250W Galaxy EVO

IV. Memory (RAM) - 6GB DDR3:
1) Digital Storm certified by mushkin enhanced:
a) 1333 MHz
b) 1600 MHz
c) 1866 MHz
d) 2000 MHz
2) Corsair:
a) 1866 MHz Dominator DHX

V. Hard Drive:
1) Western Digital:
a) 300 GB Velociraptor - 10K RPM - 16 MB Cache - Extreme Speed
b) 320 GB - 7200 RPM - 16 MB Cache - SATA
c) 1 TB - 7200 RPM - 32 MB Cache - SATA - Extreme Speed

VI. Video Card:
1) NVIDIA Geforce GTX:
a) 275 - 896 MB
b) 285 - 1 GB
c) 285 - 2 GB
d) 285 FTW - 2 GB
e) 295 - 1.792 GB
2) ATI Radeon HD:
a) 4850 - 512 MB
b) 4890 - 1 GB
c) 5850 - 1 GB
d) 5870 - 1 GB

VII. Sound Card:
a) Razer Barracuda AC-1
b) Creative Labs X-Fi Titanium Fatality Professional
c) Asus Xonar D2X

VIII. Air Cooliing:
a) V8 Cooler Master High Performance Cooler
b) Noctua NH-U12P High Performance Cooler