MOSS Great Start
Dear all
This is a great start for any one who is looking for starting to use MOSS for WCM (web Content Management) to create web portals and web sites. this three links will tell you all you need to know about the Master.Default page and page Layouts.
Enjoy
http://msdn2.microsoft.com/en-us/library/aa830818.aspx
http://msdn2.microsoft.com/en-us/library/aa830815.aspx
http://msdn2.microsoft.com/en-us/library/aa830817.aspx