To make it nice and simple:

• Open Word
• Create the margins how you want them to be
• File > Save As...
• Name it whatever you want
• In the drop down list below the file name (Save as type..), choose 'Document Template'

You will notice that the save to location has changed, take a note of where this is for later. (Default - [C:\Documents and Settings\*YOUR*NAME*\Application Data\Microsoft\Templates])

• Change this location to the desktop, (or your documents and make a link to the desktop)

Now you should be able to double-click (only use right-click > Open if you wish to edit the original document) the file, or link, to get your different margin sheet up - this will open as a new document, based on the template.


Going back to the green above - if you have destroyed the original Template, then go to the place you noted and delete the Normal.dot file; when you next open Word, it will create a new one by default.