Short answer: You can't do that, at least not in Word versions
thru 2002).
But you could use a macro to open a whole folder full of Word
docs and attach a template to each. (In Word it's *attach*,
not "apply.") Something like this:
Dim i As Long, d As Document
With Application.FileSearch
.NewSearch
.LookIn = "C:\PathToFolderContainingFilesHere"
.SearchSubFolders = False
.FileName = "*.DOC"
If .Execute() > 0 Then
For i = 1 To .FoundFiles.Count
Set d = Documents.Open(FileName:=.FoundFiles(i))
d.AttachedTemplate = "C:\WhateverPath\YourTemplate.dot"
d.UpdateStylesOnOpen = True
d.Close -1
Next i
Else
MsgBox "No matching files found."
End If
End With
Note that while this capability is deemed convenient for web
designers, it typically scares the crap out of Word users,
who ordinarily uncheck the 'Update Styles on Open' box after
the first import. If you are, or might evolve into, one of
those folks, you'll want to add code that opens the docs
again, makes that property false and resaves.