What do I need to get started? Ubuntu 8.10 (32-bit or 64-bit), which can be downloaded from here.
OK, so... first thing, you must add the OpenOffice.org 3.0 repositories, then upgrade the installed packages. Follow the steps below!
How to Install OpenOffice.org 3.0 on Ubuntu 8.10 - Step by step tutorial with screenshots! - Softpedia