Building A Word Doc From Access

I use code like the following to build a Word doc from data from multiple
linked tables:

Public Sub Build_Word_Doc()

Dim wrdApp As Word.Application
Dim wrdDoc As Word.Document

Set wrdApp = New Word.Application
Set wrdDoc = New Word.Document
wrdDoc.Activate
wrdDoc.Select
....
{code to build and save doc}

End Sub


If the user does NOT have an instance of Word open when the code runs,
everything processes as desired. If, however, they had Word open when
this code executes, they receive an error and there is a "phantom"
WINWORD.EXE left in Task Manager.

Is there a good way to check for the presence of an active Word doc before
running this code, or any other suggestions to avoid the situation I described?

Any help would be appreciated, 'cause my users look at me cross-eyed when
I tell them they have to close all Word docs before using my application.

Thanks!