manual definition update

I am helping someone who is infected and need to update his definition database manually. Unfortunately I was unable to find a How to.
Thanks for any help you can provide

Hello,

Please download the installation and the update file on another computer,
copy these to a CD or USB stick and then install and run it on the infected computer:
Installation file
Update file (run it after the installation)

Best regards
Sandra
Team Spybot

Thank you very much