Sorry I was unclear in what I was looking for. I could code this all, I am a programmer more then a webmaster, but I don't think that it is time well spent.
What I want is the registration system from something. Mambos would work pretty well with some tweaking. phpbb would also work. Neither of those are quite what I am looking for though.
I want the web based user management, becuase there is part of the site that requires membership to get to. The internal part does not change much so content management isn't required, it is more for placing orders.
I'd look into using pat_user - [php-tools.de...] - or see what it's equivalent is in PEAR - [pear.php.net....] There's a tutorial on using pat_user over at devshed and these guys seem to be pretty good programmers, they've done stuff that's in pear too. There's an article on using the PEAR class 'Live User' here: [php-mag.net...]