How do I setup vsftpd on Red Hat Enterprise Linux 3 so only specific user(s) have access but can not use the system otherwise?

Release Found: Red Hat Enterprise Linux 3

Symptom:

You need to setup a secure FTP server with tight control over whom has access. You do not want anonymous access to the server and the user(s) should otherwise not be able to login. The user(s) need to be confined to a specific directory on the system. The specified user(s) accounts should not be ...