migrating to sharepoint 2007 as a developer...

...and missing the CAML love?  you got so used to the template structure for sharepoint 2003 didn't you :-)  take a look at some information to help you understand if you don't know much about master pages (the ASP.NET template framework that sharepoint...err...um...sorry, MOSS uses now) this is a good primer especially if you are using sharepoint designer to manage your sharepoint site.

when you visit the sharepoint designer tutorial link you'll see information about:

• introduction to asp.net master pages
• modify the default master page
• modify the default sharepoint content placeholders
• create a content page from a master page
• track customized master pages
• change the current master page

again, it is a good primer for master pages with regard to sharepoint...