I have edited this addon to work
without the requirement of having the PHP Extension installed on the host. It was actually very easy with the php available at the GeoIP site.
Anyway, I sent the modifications (which is really just two lines in usermap.php) along with the extra necessary files, to digitalpoint. I'm not going to post it here without his approval (to avoid confusion); however, if you want to PM me, I will forward you the same message I sent to him.
You can see it on my site at
http://www.isxgames.com/forums/usermap.php