Was told by SF support that in order to display a calculated field from a detail record in the master,  we need an S control.
If you're able to develop S-controls we can give your further detail on what is needed.

Need assistance in getting up and running, to develop a few custom controls, i.e. multiple delete of bad imports into custom objects.
Need to create some more custom objects
Need to integrate object information with website data

Need assistance in getting up and running, to develop a few custom controls, i.e. multiple delete of bad imports into custom objects.
Need to create some more custom objects
Need to integrate object information with website data