As I always forget how to do this in Ubuntu Desktop and Ubuntu Server, I wrote this brief tutorial to help me remember. It should work with any Debian based distribution.
Hopefully you will also find it useful.
- Update your APT database: sudo apt-get update
- Install the latest security updates: sudo apt-get upgrade
- Install required packages: sudo apt-get install build-essential module-assistant
- Configure your system for building kernel modules: sudo m-a prepare
- Click on Install Guest Additions… from the Devices menu
- Mount the virtual CD Rom: sudo mount /dev/cdrom /media/cdrom
- Change directory to the virtual CD Rom Drive: cd /media/cdrom
- Install Guest Editions: sudo ./VBoxLinuxAdditions.run
- Restart VM by entering: sudo reboot
- To check that Guest Editions are installed: lsmod | grep vboxguest
MyLinuxRamblings 
HPTA NO VA
it dosen’t work moutherfuckerrr beacuse el mah xulo sucks my dick every day if you want to join us you’re welkom, el mah xulico has a free hole.
yo yo yo yo fking retarded omg do you want some brawl motherfuker i will find u and i will kill u.
No hay error yo need dinero dinero dinero
It totally works. Disregard other rants. Thanks for the quick and easy install.