I'll show you how to simply install VirtualBox on your Ubuntu 10.04 LTS operating system by using the Gdebi package installer in Ubuntu to install the VirtualBox Debian package for Ubuntu 10.04 LTS which you download from Virtualbox.org. No terminal command prompts are required.

VirtualBox is a free open source virtualization program which allows you to run a guest operating system like Windows, OS X, Linux on a host OS like Ubuntu.

I also walk you through how to install a Virtual machine and set it up in Ubuntu. It is very easy all you have to do is press the New button in Virtual Box and follow the wizard. Once you set up your Virtualmachine. You need to right click it and pick settings to add a CD or CD image to boot from.

Good luck installinh Oracle Virtual Box in Ubuntu 10.04 LTS and your virtual machine.