I've found the problem, fixed it, and I need another way to fix it, before I will ROFLMAO...
I've uninstalled the driver of my 8800GT, and than, before I let the windows to restart, or after the first restart (when it turns on newly after the first restart it installes the driver again, asking for another restart !), the resolution is good !
32BIT, 1024x768...but only without the driver.
Maybe I should find a way to block the windows 7 to install driver from net automaticlly and try to install mine before he installs it by himself ?