Installing RabbitVCS on Ubuntu 9.10 Karmic Koala

System -> Administration -> Software Sources
Enter your password
Click the 'Other Sources' tab
Click [ Add... ]
APT line: deb http://ppa.launchpad.net/rabbitvcs/ppa/ubuntu karmic main
Click [ Add Source ]
Click [ Close ]
Click [ Reload ]

sudo apt-get install rabbitvcs
Enter 'Y' to continue
Press [ Enter ] to continue

When a 'Information Available' box pops up, click [ Run this action now ] to restart Nautilus