Powerpivot for CUBEVALUE formulas on OLAP database

Hi

Using PS2010, SQL 2008R2, Excel 2010, SharePoint 2010

I'm keen to use OLAP CUBEVALUE formulas in Excel for some non standard report requirements.

I would like to add Powerpivot to the Server for this purpose with a SharePoint level install but I understand that the PS OLAP database is not compatible with Powerpivot for this kind of functionality and a new cube or database may be necessary.

I'm assuming that the desktop install will also not work for these formulas if connected to the PS Olap Database.

I wonder if anyone has instructions for making the necessary adjustments so that CUBEVALUE formulas work in these situations?

Thanks

Brian

Brian Hyam