Space inbetween Parent Forums - Please help!

[Sonno]

I'm looking for a way to break up my forum boards so the boards aren't all ontop of each other.

When I collapse all the different boards here on vbulletin.org/forum, there's a space inbetween them all vertically.
When I do so on my forums, there is none. They're all ontop of each other.

How do I get that space in there?????

For example, right now my site's boards look like this:

Forum1
--Subforum1
---catagory 1
---catagory 2
---catagory 3
--Subforum 2
---catagory1
---catagory 2
---catagory 3
Forum 2
--Subforum1
---catagory 1
---catagory 2
---catagory 3
--Subforum 2
---catagory 1
---catagory 2
---catagory 3
Forum 3
--Subforum1
---catagory 1
---catagory 2
---catagory 3
--Subforum 2
---catagory 1
---catagory 2
---catagory 3

I'd like it to look like this:

Forum1
--Subforum1
---catagory 1
---catagory 2
---catagory 3
--Subforum 2
---catagory1
---catagory 2
---catagory 3

Forum 2
--Subforum1
---catagory 1
---catagory 2
---catagory 3
--Subforum 2
---catagory 1
---catagory 2
---catagory 3

Forum 3
--Subforum1
---catagory 1
---catagory 2
---catagory 3
--Subforum 2
---catagory 1
---catagory 2
---catagory 3

Anyone?