Get the Whitepaper called Backtrack 4 – Updating the Nmap 5.0 fingerprint database.
You can download it from the following link: https://packetstormsecurity.com/files/download/89873/bt4-update.txt
Source: https://packetstormsecurity.com/files/89873/Backtrack-4-Updating-The-Nmap-5.0-Fingerprint-Database.html