>I could be talking nonsense here, but isn't this a feature of the Word VBA implementation, or more to the point the Office Web Services (OWS) ?
>
>This would be easier than playing with the registry. You might also run into trouble if your network has Group Policies because they could prevent you from changing this setting I think?
>
>Hope this helps a bit,
>Regards
>Simon

I'm not sure, the only reference I could find was via the File Extensions, I've managed to solve it using the registry now.

Thanks
Kev