I didn't read the article, but i use a similiar functionality on my own homepage. there are some "virtual" member directories. the don't really exist on the server but you can access them if you enter the URL
http://www.trexx.ch/member/yourMemberName
And here's how it works:
You have to add a single line in your httpd.conf or (if you don't have access to that) in a .htaccess file.
My httpd.conf looks like
<Location "/member" >
ErrorDocument 404 /memberPageGet.php
</Location>
If you wanna do it by .htaccess you only have to create a directory member, place the htaccess into it with the line:
ErrorDocument 404 /memberPageGet.php
The webserver will now redirect to the Script memberPageGet.php
if someone tries to access the virtual directory. In the script you can access $_SERVER[QUERY_STRING] (or something like that) to get the original URL.
It shouldn't be a problem then to parse the desired variables out of it.
hope that helps.
greez,
tREXX