Do you guys think the OCZ GameXstream 700W will be the best PSU for this comp? I will be using it for gaming lol. Code: Intel Core 2 Duo e6600 Asus P5B-Deluxe w/WiFi eVGA GeForce 8800GTS 2GB DDR2 800 (PC6400) Crucial Ballistix RAM (D9 Chipset) Tuniq Tower 120 w/Arctic Silver Cooling Thermaltake Armor case SoundBlaster X-Fi Fatal1ty
Unless your SLI'ing that 8800GTS, I'd be shooting a little lower on the wattage side. Nevertheless, it will do the job fine. I haven't heard anything bad about that particular PSU as of yet. Other good chices would be the Seasonic 650W S12Energy+ or the Corsair HX520W or HX620W if you want to go the modular route.
A good 500W from a manufacturer like Seasonic, Enermax, Antec, Hiper would run that system fine, 600W for one 8800GTX or 8800GTS SLI