Problems with MS Office Picture Manager.

I'm trying to send pictures from MS Office Picture Manager to MS
PowerPoint. I've read the help which says:

1) Select the pictures you want to send.

2) On the File menu, point to Send To, and then click Microsoft Office.

But when I get to this point I get:

"To use this feature you must have one or more of the following
applications installed: MS Office Excel, PowerPoint or Word. Please run
your installation CD or contact your administrator."

All of these applications are already installed on my machine, so why
do I get this message?

If I run the installation CD as instructed will I end up with multiple
copies of these applications on my PC?

Or can I somehow force it to find, recognise and use the existing
installations? If so how?