Special .htacces for 20 users

Hi,

I want know if someone can help me, I want to put a .htacces on my page and I want a special thing for it, look:

The system I want is a acces control that will ask user a password and a username that I configure (and also I can modify) for each user (a different for each user) and I want to, if they put the rigth password, make them go to a different (ex: Barney wrote his user name and password correctly, after he go to a special page that I make only for him, EX: "barney.html" and bob do the same with his password and user name and go to another page) page for each password (a page that I make for THIS user). Twenty will be around my max user for this (so I can create the 20 page). This because they will have acces to a CGI script that make them upload in my anon. FTP and each user must upload in a different dir and have different instructions to read (I must do a CHMOD for this CGI, but I know how).

This is my little problem, my web server say that it will be too much programation. And they run with the Unix and there web server is the latest Apache (they support all the perl).

Thanks!