Only allow authorized users to edit pages

Jul 7, 2009 at 9:00 PM

Is there any easy way to only allow logged in/authorized users to add and remove widgets, add pages and change settings?
For anomymous users I also want the widget header (including title, minimize, restore, edit and close button) to be invisible. I have not worked very much with webparts, and this have probably not been an issue if I had.
Still I would really appreciate if someone could help me to make me getting started even faster.  My idea is to use this project as a part of my CMS system.