It is especially good and useful to use a scaned document as template in pwer point presentation. There is an option is template slection mode which enables you to select a picture or a scanned documenet as a template. I am not of any opinion in selecting the tamplate for any other programme than powerpoint.
In Office 2007: (1) click on new document. It will open template window panel. (2) select my templates. (3) select normal and template in the right hand corner. (4) insert your document and click save.