Although if it could be done easier in PHP, by all means...go ahead.

I need a script that is .htaccess and .htpasswd protected. I need it to have an admin from our site enter a username, it RANDOMLY give out one of four values, then display that value to the admin, while also writing the user and the value to a text file. Can someone do this for me?

Hey Wahooo,

I know its not exactly what you wanted but will this script work:
http://www.acjavascripts.com/CGIScriptsACAccess.html