okay, you need to boot the computer with the ubuntu cd in it. Then just make sure that the cd drive is the 1st boot device (you can change this in bios) and then when it asks to "press any key to boot from cd" press something. Then it should start up with the ubuntu cd. Then when you get to the desktop you can install it from there. And the best thing about this? You can browse the internet etc while installing the OS.