More PHP Includes

Thanks again for all the help. I created a simple page of all includes (header, menu, 3 columns). I mixed the file types up. The menu (projectseven PMM) I saved as a library item, works fine. Had an HTML file in there, but I am guessing that having 2 page declarations along with an extra set of <head> and <body> tags was playing havoc with the code, so I removed them. Same thing when I created a php page and saved it as filename.inc.php, so I removed all the declarations and tags, again seems to work fine. Also included a simple .txt file. I did get some strange results in that all of the <tags> were highlighted after the menu, and I had to remove and insert again to correct. So is this the best way, to create a php page, remove all of the html tags and page declarations and name it filename.inc.php? (I'm using DW CS3) Also, something I do not understand, I included a small txt file in a page of a customer and it shows fine, however this file is not on the server...is this normal?