Report Builder Using Report Model Based On Linked Server (Excel) - Primary Key?

I've created a linked server with a pretty basic Excel spreadsheet, and used this command to create a linked server to it:


sp_addlinkedserver ''XL_SPS_1', 'Excel', 'Microsoft.Jet.OLEDB.4.0', 'c:MyExcel.xls', null, 'Excel 8.0'



I want to use this as the data from which to build a report model. As linked servers don't show up in the Data Source View wizard, I created a view in SQL Server:


create view MyExcel
as
select * from XL_SPS_1...Sheet1$


Okay, great, now the view shows up in the DSV wizard and I can create the data source view. However, when I create a new report model based on this data source view, the Report Model Wizard tells me at "Create entities for all tables" that I've got an error when it processes dbo_MyExcel that "Table does not have a primary key."

I assume this is where the identifying attributes for the entities in the report model are taken from, so I really can't go further. Does anyone have an idea as to how to add a primary key to a linked server (Excel) in SQL 2005? Can this be done? Other than importing spreadsheet data to a SQL table, how can I get around this?

Thanks,
--Stan