http authentification

Hello, I'd like to setup special auth system. I would have "Login" form with username and password. My php script would authorize users and throw them into their own password protected directories. Each user have one protected directory. These directories are protected with .htaccess files. I have this problem. When my script authorise users and it did this: Header("Location: http://user:password@www.site.com/members/directory_of_user/"); unfortunatelly I get http authentification login box. (that's what I'd like to avoid ;-)) Crazy is that user is let in after clicking "cancel". Is there any other or correct way how to send http authentification variables to scripts in protected directories so that apache won't show that terrible username/password dialog ? Best regards, Roman