I was following the directions here:
vBulletin Community Forum - Step by Step: Create a test forum based on a 'snapshot' of your live one
I get most of the steps, but #3
#------------
# STEP THREE:
#------------
Log in to your server via SSH
Type the following:
mysqldump --opt -u databaseuser -p databasename > /path/to/backupname.sql
Replace databaseuser with the Username for that database
Replace databasename with the Database Name
Replace /path/to/backupname.sql with the path that you wish to save your back up to (and make a note of it).
You will be asked for a password. Type it in and press Enter. Your database will be backed up.
(Incidently this is also a good way to make backups of your database - always remb to turn the forums of first tho)
What's a SSH and where do I access it? From there I assume it's straight forward?
-Luigi