HOWTO: Boot & Install Ubuntu from the Grub Rescue Prompt

This guide will detail how to boot an Ubuntu Live CD ISO from the "grub rescue>" prompt. The procedure will also work from the "grub>" prompt for Grub 2 users. I started this thread to help netbook users who are unable to mount the Live CD to resolve Grub problems on a previously-working installation. No CD is required. While writing the guide, I realized there might be others who could also use the instructions so I removed references