[Zope] security for nobody

[CURTIS David]

Friends of Zope,

I am a Zope newbie who wishes to allow access only  to a limited number of users (10) on a MYSQL database in Zope.  The users are web novices and not very technical savy.  The way I setup Zope is that the user nobody comes in a web server using the approach:
htttp:\1526.125.145:9673\directory1\index.html
How can I password the *database* directory from casual browsers?  I would like a password prompt appear and then have them log in.  Has anyone done this and How did you do it?