[Citadel Support] Multiple User Account Creation Button

[metamorph]

I was trying to setup a button for WebCitlogin.html that would allow the user
to setup multiple usernames.
I was thinking of linking the button to a form that saves the following info
to userlist.txt:

USER your admin name 
PASS your password 
CREU user name 1|password1 
CREU user name 2|password2 
CREU user name 3|password3 . . . 
CREU user name 99|password99 
QUIT 

Then, they select submit and  the following line is run on the server:  
netcat your.citadel.host.org 504 <create_users_txt

Is this logical? 
If so, I have the form to create the textfile, but does anyone have any
suggestions (please be
as detailed as possible-NOOB) on how to create a file to run the last
command/netstat (PHP-maybe?).

Thanks,
B