The address is http://phpbbwap.garagebox.net .
Actually, we got this script from Jan Soft but not very useful because of some useless/error script. Tried to contact them, but no respond till now.
Therefore, we really appreciate if you can give us a comment on that. We know that the script is not perfect at all but any comment could give us a spirit to rewrite it back.
Meanwhile, we are still in development to rewrite PhpNuke for WAP. So, we like to know anybody who interested in this project.