Hi!
I don't think that all features will work on 3.8.
The mod orginally was designed for 3.x, but has been edited and extended by Enzo for 4.x
As I see the vBPlaza for 3.x has been moved to the modification graveyard, so you can't download it any longer.
Of course you can make yourself a testing board and trying to operate this mod
Edit: You can even check this page:
http://forums.codetwink.com/showthre...ta-1-Download&
Maybe there you will find an answer on your question and a download link for the original vbPlaza