You can either Upgrade to 10.04 LTS online or you can use the Alternate Install CD from Ubuntu. Now, burn the Alternate CD ISO to a disk or mount the ISO.

This step by step guide will take you through the installation procedure. To start with, get hold of a 4 GB thumb drive and create a boot-able image with Unetbootin.

At a strategic time just before the release of its Lucid Lynx, Canonical has released data relating to the number of Ubuntu users worldwide. This report estimates Ubuntu users at 12 million. That is a major 50% increase over the last 18 months.