adding subforums via mysql

[wazo]

Hi guys

This is what i would like to do

I run a mobile phone site and have about 9 main categories and 500 sub categories, I would like to convert this to vbulletin as forums and then subforums, I created a script to run that would add it to the 'forums' table in mysql but it looks like vbulletin doesnt actually use this to see which forums are to be displayed

So my questions are

1)Where are the forums and subforums kept in mysql
2) What would be the best process for me to do?

Many thanks

Chris