same table user for two boards
 

Hi,
before to buy vbb I'd like to know if with this latest version of Vbb is possible to use the same table user for different boards in the same domain.
Example:
if an user register into
board1.mysite.ext
he also could post in board
board2.mysite.ext

On vbulletin.com ansered (thanks feldon23) that
"Lots of people ask for this feature, but it is not built into vBulletin (yet). There are some solutions over on vBulletin.org once you purchase vBulletin. Note that you must buy a different license for each forum."

There is an hack for this? Can someone give to me some details? It's the condition for moving from wbb (woltlab) to vbb
Thanks