Comment 22 for bug 243390

I had the very same problem, which I found also while trying to associate *.mws files with Maple V R 4 app. And the solution IS quite simple.
Clearly, launching from a shellscript
wine ~/.wine/drive_c/Program\ Files/Microsoft\ Office/OFFICE11/WORDVIEW.EXE $1
($1 being the document to open)
wouldn't work. The viewer starts but doesn't show anything.
You have to start, instead :
wine ~/.wine/drive_c/Program\ Files/Microsoft\ Office/OFFICE11/WORDVIEW.EXE "Z:"$@
THE trick is to insert "Z:" before the command-line arguments.

Now for KDE : just asssign vnd.ms-word mimetype to
wine ~/.wine/drive_c/Program\ Files/Microsoft\ Office/OFFICE11/WORDVIEW.EXE "Z:"%U