Forum Database integration help??
 

So i'm going to be running a VB 4.x.x forum system on my site, I'm currently on 3.8.4 but i'm upgrading since i'm redoing my site from scratch.

I am trying to find out how to make it so when a user registers on my vb forums, i can integrate it to register them automatically to my games database. I have the tables for it to insert etc but i know nothing about how i would add this. and I asked a few people privately and nobody can figure this out...

I have the register.php for my game handy if anyone is willing to do this or ATLEAST show me how step by step so i can learn from it.

I tried getting this answered FOREVER at vb.org but nobody has a clue. And those that do, obviously don't care to help others :/

Summary: (Trying to make vbulletin register.php install database information normally AND add information into another(multiple other) database(s))