IE6 attempts to install missing office component when using excanvas to draw image

I have a page that uses excanvas to draw some images. While testing the new page in IE6, one computer attempts to open office 2000 and install a missing component. If the office 2000 install is canceled the vml images appear. This problem only happens on one of my test machines but it still worries me.

Anyone seen this issue when using IE6 and excanvas before?

How do I fix Microsoft Office installation error?

If you encountered a problem while installing Office on a PC, try restarting your computer and then attempting to install Office again. If that didn't help, use this easy fix tool to uninstall Office completely. After your uninstall is complete, try reinstalling Office.

First of all: With my OSX/Linux background I'm not an IE6 expert at all! :)

That said: It looks like a MIME-Type problem to me. Is there a way to associate MIME-Types to applications in IE6? If yes, compare the settings of the two IE6 setups and look for differences.