time for a new computer?

i need a new computer and i am a gamer (mostly world of warcraft and flight simulator 10) i have my mind set on a alienware and just wanted to run these specs by [1] Area-51® 750i Processor: Intel® Core™ 2 Duo E8400 3.00GHz 6MB Cache 1333MHz FSB Alienware P2 Chassis: Alienware® P2 Chassis with AlienIce™ 3.0 Video Cooling - Space Black AlienFX®: Alienware® Standard System Lighting - Astral Blue Alienware P2 Chassis Upgrades: Alienware® Standard System Cooling Power Supply: Alienware® 750 Watt Multi-GPU Approved Power Supply Graphics Processor: Single 512MB NVIDIA® GeForce® 9800 GT Memory: 2GB Dual Channel DDR2 SDRAM at 800MHz - 2 x 1024MB Motherboard: Alienware® Approved NVIDIA® nForce 750i SLI Motherboard Operating System (Office software not included): Genuine Windows Vista® Home Premium (64-bit Edition) with Service Pack 1 System Drive: Single Drive Configuration - 250GB SATA 3Gb/s 7,200RPM 16MB Cache Optical Drives : Single Drive Configuration - 20X Dual-Layer Burner (DVD±RW) Enthusiast Essentials: Single High Performance Gigabit Ethernet Ports Sound Card: High-Definition 7.1 Performance Audio Keyboard: Standard Keyboard - Standard Keyboard Mouse: Standard Mouse - Standard Optical 3-Button Mouse with Scroll Wheel Warranty: 1-Year AlienCare Onsite Service and 24/7 Toll-Free Phone Support Security Software: McAfee® VirusScan® Plus 9 - 30-Day Free Trial Factory Installed! Alienware Extras: Alienware® Mesh Cap Alienware Extras: Alienware® Desktop Binder Alienware Extras: Owner Identification Card Alienware Extras: Internal Wire Management Avatar: Alienhead Glow Window Style: Graphite Window Style Mouse Pointers: Standard Mouse Pointers Wallpaper: Alienhead Glow Wallpaper: Alien Schematic Wallpaper: Alienhead Logo Power Plan: Balanced Automatic Updates: Automatic Updates On Sidebar Gadgets: CPU Meter Sidebar Gadgets: Notepad Time Zones: (GMT - 5.00) Eastern Time (US & Canada) [1] Area-51® 750i Processor: Intel® Core™ 2 Duo E8400 3.00GHz [...]