HTML and PHP in frames?

Hi,

I recently bought a php imagerating script(index.php) and would like to put a header on the mainpage.

The header would be in flat html and Id use frames so the frames page would be called

'index.htm'

the header would be called 'header.htm'

and the main php page would be called 'iindex.php'



Is it possible to do that and what do I have to consider when I want to do this??

Well thank you gentlemen, that was very helpful.