PHPNuke to phpBB integration Question

Hey folks... I have a standalone phpBB forums and just recently installed
PHPNuke on my website. I know phpnuke comes with it's own version of phpBB.

How can I make it possible for members who register through phpnuke to
automatically be register with my standalone phpBB?

If this is not possible, how can I transport my standalone phpbb to the one
that is included with PHPNuke?

(I've visited both phpbb forums and phpnuke forums and have not had any
success in obtaining an answer).