I have now finished my first mambot which I have called mosviewonly.  This little addition allows you to specify areas of your content which you want viewable only by certain group members.  The groups being the three standard Mambo groups;

• public
• registered
• special

For those who aren't completely aware of the groups available in Mambo, the following applies;

Public
All people who visit your site but don't sign in.  So in essence these guests just visiting your site.

Registered
These are the people who have a sign-in onto your site AND have actually signed on.

Special
These are the people who have signed onto your website and you have defined as an Author, Editor, Publisher or Administrator.