BuddyPress.org

Hello everyone, I wanted to ask ..

BuddyPress is installed when the system creates the social wordpress and it works fine, except if you are a new user.

If I try to register and I click on the button used all ok, if by chance I click on the button creates blog (I have version multisite active) goes into the home, because they do not understand that one must redirectare to register first, as it does without the wordpress plugin.

Now I wonder, how can you intervene via htacess or in another way, to make him understand this?

thanks