rror message: X server (graphical interface) not set up correctly--occurs when starting Ubuntu 7.04 up after install

After I installed Ubuntu 7.04 I the issued out the command "sudo apt-get install ubuntu-desktop" it then started downloading and all the software needed. After the installation I restarted my laptop (HP NX9420) and it tries to start up in the GUI interface but only comes back with an error message: "X server (graphical interface) not set up correctly"Can someone please help me as I am totally new to Linux and don't want to go back to microsoft.I have tried a couple of other settings when using the command: "sudo dpkg-reconfigure xserver-xorg" and "sudo dpkg-reconfigure -phigh xserver-xorgPlease please please I need help.

Reconfigure the xorg.conf

You have to reconfigure the xorg config file. The command is sudo dpkg-reconfigure xserver-xorg, it will load a wizard and ask some questions, if you don't know the answer, select the default selected answer.