Creating custom settings ($vboptions)
 

Is there a tutorial anywhere for doing this with 3.5.3? - Answered

I have two more questions.

What is the difference between Free, Numeric & Boolean (Data Validation Type)?
vBulletin Default (Will be replaced by upgrade scripts) - What is this exactly? Should it stay yes?

no but to add just turn on debug mode (how to here) then go to vboptions then it will say add new setting group and.. you got it from here :)

thank you for the quick reply.

I have two questions.

What is the difference between Free, Numeric & Boolean (Data Validation Type)?
vBulletin Default (Will be replaced by upgrade scripts) - What is this exactly? Should it stay yes?

In a "Free" field you can put any data you like, tekst, numbers etc.
In a "Numeric" field you can only put numbers (1, 2, 234, etc).
In a "Boolean" field you can only put True of Fals (like yes or no). There is lots of info about working with boolean variables on the internet.

vBulletin default are the settings that come with the vB package. When you install vB all options have a setting, that's called the default setting. Offcourse you are free to change those to your liking.