How to install Virtualbox Guest Addition for Linux Mint 8 (as guest) on Ubuntu 9.10 (as host)

1. go to VirtualBox screen.. go to Devices > Install Guest Addition..

2. immediately u will see an ISO being mounted on your Ubuntu desktop..

3. go to Terminal.. and run this..

cd /media/cdrom
sudo bash ./VBoxLinuxAdditions-x86.run

Note: x86 here coz my guest OS ie. Linux Mint 8 is of x86.