I need help building my first Gaming Computer !!!
THIS IS WHAT I WANT TO USE FOR MINE......
1-NZXT Guardian Black SECC Steel Chassis ATX Mid Tower Case 921RB-BL
2-ASUS M5A97 R2.0 AM3+ AMD 970 SATA 6Gb/s USB 3.0 ATX AMD Motherboard
3Corsair XMS3 4 GB 1333MHz PC3-10666 240-pin DDR3 Memory Kit for Intel Core i3 i5 i7 and AMD CMX4GX3M1A1333C9-
4-AMD Phenom II X4 965 AM3 3.4Ghz 512KB 45NM 125W 4000MHZ
5-EVGA GeForce GTX 550 Ti Superclocked 1024 MB GDDR5 PCI Express 2.0 2DVI/Mini-HDMI SLI Ready Graphics Card, 01G-P3-1557-KR - EVGA
6-Sony Nec Optiarc AD-7241S-0B 24X Dual Layer DVD+/-RW SATA Drive with LightScribe, Bulk (Black)
7-Cooler Master eXtreme Power Plus 500w Power Supply (RS500-PCARD3-US)
How much are you willing to spend? And which CPU brand do you prefer, AMD or Intel? Tom's Hardware has a monthly System Builder article that lists builds in different price ranges. You can easily put together a decent gaming rig for about $500. System Builder Marathon, August 2012: $500 Gaming PC
Here's a few more articles that should help:
Best Gaming CPUs For The Money: September 2012
Best Graphics Cards For The Money: September 2012
And knowing how to benchtest is extremely important:
After doing the above research, select a list of components and post them with links for others to look the list over for you and recommend alternatives when needed. You have to be a little bit crazy to keep you from going insane.