One of these links works, namely the first one! There you can read that Mathsoft (the originator of Mathcad) once had the Mathcad Appolication Server (MAS), which allowed to show mathcad sheets on a web-page and actually perform calculations with it. Unfortunately Mathsoft discontinued the product and since PTC took ownership no comparable functionality has been developed.
You should be able to use any Mathcad worksheet the same way as you can port them to MsWord: as a pcture.
