hey guys, i just wanted some help with building a new rig and need some expert advice. this is my list of the things i WANT to put in my computer, Dual 768MB NVIDIA® GeForce™ 8800 Ultra - SLI Enabled or maybe dual 512 ?? not sure Intel® Core™ 2 Extreme or maybe a Quad core 4GB DDR2 RAM Genuine Windows Vista™ Home Premium with TV tuner Intel® Desktop MotherBoard D975XBX2 20X Dual-Layer DVD±RW w/ Light Scribe Killer K1 Gaming Network Interface Card Ageia PhysX PCI-Express Processing Unit w/ 128MB High-Definition 7.1 Performance Audio if you are wondering what the hell is a gaming network interface card....... it is a card that reduces you lag while playing online and makes your online experience ALOT better. so if you guys can give me expert help with choosing parts then it will be very much appreciated.