[horde] disabling wvware

[Jigish Gohil]

Hi all

I want to disable wvware.

I have tried commenting the lines:

$mime_drivers['horde']['msword']['location'] = '/usr/bin/wvHtml';

in horde/config/mime_drivers.php. That just gives an error 

The program used to view this data type () was not found on the system.

when attachment link is clicked. On removing everything from the above
file, only file type icons disappear, the link remains.

How do I get 'Download' dialog on clicking the attachment link instead
of opening it with horde mime viewers or wvware.

Regards

Jigish