Hi,
I have installed Ubuntu 8.04 Hardy Heron Desktop and having monitor resolution problem. It displays only 800x600 and 640x480 in menu System | Preferences | Screen Resolution.

Exactly the same problem I have had in Ubuntu 7.10 Desktop and I have solved it using command:
sudo dpkg-reconfigure xserver-xorg

But in Hardy there is no video option in my xserver-xorg window. There are only setting about keyboard.

How to set resolution monitor to 1024x768?
Thanks,
Abcuser