The Guide shows you Step-by-Step How to Install and Quick Start with the Latest VirtualBox 7.4 on Debian Linux 6 Squeeze GNOME 32bit/64-bit Desktop.
Finally, the post’s Content is Expressly Reduced to Give Focus to the Essentials Instructions and Commands.

How to Add the VirtualBox Repo for Debian Squeeze:
Debian Squeeze VirtualBox RepoOpen a Terminal Window
(Press “Enter” to Execute Commands)In case first see: Terminal QuickStart Guide.
Installing Latest VirtualBox
sudo apt-get install virtualbox-4.3 dkms
Installing VirtualBox Guest Additions
Linux VirtualBox How to Install Guest Additions:
Linux Installing Guest Additions
