Tying database to a protected directory

[Koolman]

I have a password-protected directory that has files for download in it. I also have a database that stores user information including login passwords and usernames. How can I tie this database to the password-protected directory via ASP so that users can type in their user name and password that is first checked against the database and if there is a match they are let into the directory and are free to use any files inside?

Any help would be greatly appreciated.

Koolman