From version 2000 Microsoft changed the way Word's default installed document templates were stored. The standard templates appear to be stored as files in a sub folder of \Program Files\Microsoft Office\Templates which will vary according to language. However these can not simply be manipulated with filing system commands, nor will any personal templates filed in this location be recognized by Word. Delete the files and Word will replace them.
Make templates available to multiple users?
See
Microsoft-Links.com for more tips and tutorials!
Cheers!