The use of Gliffy appears to be a great fit for the KPIs.
Regrading your two questions, I've haven't found any way of linking a URL to an image. Look at the Gliffy forums for possible answers to your questions: http://gliffy.com/forums/
that was a good hint. I found the solution to the link issue right away.Thanks a lot
Enter the destination URL
Or link to existing content