MS xlhtml & ppthtml driver problem

[Sean M Lentner]

I installed the following package for ppt and xls support from xlhtml.org:

xlhtml-0.4.tar.gz

I then uncommented the following lines and added the correct paths for each 
application:

type ppthtml
ppthtml is /usr/local/bin/ppthtml

type xlhtml
xlhtml is /usr/local/bin/xlhtml

When I sent a test message I didn't see the MS icon for each file type and 
wasn't able to open either file type either.

Thank in advanced
Sean

/**
 * MS Excel driver settings
 * This driver requires xlhtml (www.xlhtml.org) to be installed.
 * Uncomment these lines to use this driver.
 */

/* Location of the xlhtml binary. */
$mime_drivers['horde']['msexcel']['location'] = '/usr/local/bin/xlhtml';
$mime_drivers['horde']['msexcel']['inline'] = false;
$mime_drivers['horde']['msexcel']['handles'] = array(
   'application/vnd.ms-excel',
   'application/msexcel',
   'x-extension/xls');
$mime_drivers['horde']['msexcel']['icons'] = array(
   'default' => 'msexcel.gif');


/**
 * MSPowerpoint driver settings
 * This driver requires ppthtml, included with xlhtml (www.xlhtml.org),
 * to be installed.
 * Uncomment these lines to use this driver.
 */

/* Location of the ppthtml binary. */
$mime_drivers['horde']['mspowerpoint']['location'] = '/usr/local/bin/ppthtml';
$mime_drivers['horde']['mspowerpoint']['inline'] = false;
$mime_drivers['horde']['mspowerpoint']['handles'] = array(
    'application/vnd.ms-powerpoint',
    'application/mspowerpoint',
    'x-extension/ppt');
$mime_drivers['horde']['mspowerpoint']['icons'] = array(
    'default' => 'mspowerpoint.gif');