Yeah, its a good idea to install the nvidia drivers, but i think he cant increase his screen size past 1024x768 because of the vanilla xorg.conf that the installer creates.
I had this same problem after i installed, and i found it's because of the max horizontal refresh rate setting in the xorg.conf
to change this, open /etc/X11/xorg.conf in your favorite editor. (you'll need to be root
)
under Section "Monitor"
change
HorizSync 31.5 - 50
to:
HorizSync 31.5 - 64.3
save, resart x, and enjoy.