spliting my vb board

[Slugger00001]

I am wondering if this can be done, or if there is an easier way of doing so.

I want to split my board into 3 different websites (from the same domain)

for example, say my website is board.com

I want there to be

private.board.com (which will entitle a new section to the main board board.com )
then I would want there to be, open.board.com (which would be another section)
I want them to all run of the same database though so all the users are on each of the boards and there posts counts update on each and so on.

Is there an easier way of doing this? or will this work if I run them off the same database?