Ubuntu

Howto: Install Linux Guest Additions + Xorg config (View topic) • virtualbox.org

http://forums.virtualbox.org/viewtopic.php?f=3&t=15679 example Xorg config for recent ubuntu/fedora

VirtualBox - Community Ubuntu Documentation

https://help.ubuntu.com/community/VirtualBox

David Sudjiman » Blog Archive » Installing and setting TFTPD in Ubuntu

http://www.davidsudjiman.info/2006/03/27/installing-and-setting-tftpd-in-ubuntu/ useful notes to deal with tftp on ubuntu/debian (needed when u deal with embedded systems/networking gear)