esmi on "do i need php in the header-sidebar & footer?"

do I need php in my header, sidebar, main, and footer?

Yes. The sidebar content normally generated dynamically. The main content templates need to the use Loop to generate your post/page displays and the footer contains hooks that are needed by some plugins.

Does the index direct the content from the database?

All of a theme’s templates pull content from the database.

In the past I have used iframes to do this will it work the same way?

Unnecessary. WordPress handles most of this automatically via various template file and tags. See Theme_Development for an overview.

I understand the premise of calling content to screen/page but does it work the same? Mainly flash and html/css coding.

CSS, and XHTML mainly.

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