OK, just to make sure we're clear.
phpBB2.0.1 is the phpBB Forums integrated in Nuke6.5. They are based on the 2.0.4 phpBB original forums.

If you are currently running the phpBB ported 2.0.6 forums within your Nuke site and want to import into 2.0.1 forums, that would be a simple upgrade to Nuke6.5

There is no standalone 2.0.1 phpBB forums.
The standalone phpBB forums are 2.0.4 here
http://phpbb.com/downloads.php

mikem