Error message: X server (graphical interface) not set up correctly--occurs while installing Ubuntu 7.04

Before the Ubuntu 7.04 CD finished loading on my ThinkPad T-60 (with preinstalled Vista Ultimate)  the following error message came up:"Failed to start the X server (your graphical interface). It is likely that it is not set up correctly. Would you like to view the X server output to diagnose the problem?  <Yes>    <No>" Well, I clicked "<Yes>" but what came up was beyond my understanding. Would you be able to clarify what steps I need to take to resolve this problem?

Input the command "sudo

Input the command "sudo dpkg-reconfigure xserver-xorg" (without the ""). This will start a text-based wizard to reconfigure X. Answer the questions you can. If there are questions which you can't answer then go with the given default. If at first you don't suceed than try again. Try specifying VESA...

Follow up after inputting the comand "sudo..."

    Upon answering all the questions of the wizard the black input screen came up with the following words: "xserver-xorg postinst warning: overwriting possibly-customized configuration file; backup in/etc/X11/xorg.conf.20070729111015"    Many thanks for your assistance. Any suggestions for input?

same problem

 I'm having the same problem. Everyone that i talk to happens to have nvidia graphics card. I did that sudo thing and and the end i press enter and then it just starts putting in "ubuntu@ubuntu" over and over again!plez tell me if you get and answer.