Re: Any particular case I should buy?
If you have the money I highly recommend my current case the Cooler Master Haf-X. Very clean layout and easy to work with. Also keeps your internals ice cold with the proper fans, speed control, and mounting procedures. Downside is its a $200 case.
For a budget case I would recommend the standard in case usage the Antec Nine Hundred Black Steel Mid Tower. See the link below for its price on newegg.com, it is truly a great starter case.
Newegg.com - Antec Nine Hundred Black Steel ATX Mid Tower Computer Case
Case: Cooler Master Haf X
CPU: AMD Phenom X4 955 Black Edition Deneb
MOBO: Gigabyte 890FXA-UD7 [4X XFire Support, 6GB Sata Connectors, 16GB RAM Support]
VGA: 2 Sapphire Radeon 5850 Toxic Edition Video Cards Xfire'd
HD: 3TB Western Digital Caviar Black
RAM: 8GB Corsair XMS3 DDR3 Ram
PSU: Corsair 850TX Enthusiast Edition
Drives: 1x Sony Optaric Blu-Ray Drive, 1x Lite-on DVD RW Drive
Cooling: Corsair H-70 Water Cooling
ETC: Razer Mamba Mouse, Logitech Z-5500's, 2x HP 27" 2709m Monitors