After installing a new BFG Nvidia Geforce 6800GT 25MB on my pc, the game will not allow me, nor does it display, a resolution option above 800x600. Previously, with an ATI 9800Pro I had that choice. Anyone have an idea? The game looks fine but I'd like the option of upping the eye candy. AMD Athlon 3200+ Barton CPU 2 sticks of Mushkin 512 Asus A7N8X-E deluxe MB XP Pro OS Tks.