yes Mike, that is a very novel idea, but unfortunately that is not the issue, since I know that.
You're thinking what vboard.co.uk was thinking in the beginning and he said that the option is available in 1.1.5
Read the posts before these.
My porblem is this:
Once I switch to vB, I will have 70 categories and around 700 forums in them.
Of course I will use, category-only view.
I don't like the way vB works with categories only. If you click on a category, it will expand that category to show the forums inside, but it will still be a list of all other categories too.
for example:
http://www.vbulletin.com/forum/index.php?categoryid=2
you see that it display forum under "General" but you still see "vBulletin", "vBulletin 2.0 Development"...etc.
What I want my board to do when someone clicks on a category is to take him to a new page that ONLY lists the forums in that category, without displaying the whole list of other categories.

HERE IS EXACTLY HOW I WANT MY FORUM TO BEHAVE:
http://www.carforums.com/forums/
It uses vB. It is tweaked to just what I want.
Once you click on "Acura" for example, it takes to a page with ONLY the list of forums under "Audi".
You do not see the list of other categories.

I hope I made sense...