How do I set display DOB and age as default?

[jderouen]

I'm using VB 3.6.7PL, and I still find it odd that this option isn't part of the standard vBulletin.

I've seen a lot of conflicting information on the subject, from people saying it IS in there (trust me, it isn't) to giving advice on how to change it that doesn't seem to work. (Though, for all I know, worked with previous versions...)

So I'm asking again - how can you change things so that, instead of "hide age and date of birth," the default is "Display age and full date of birth?"

Also, how would I go about changing already-existing user's defaults from hide to display?

Thanks,
Joe