I'm using CR 2008 and I have an excel worksheet (Excel 2007)that I would like to use as a data source. When I try to select the file, the file type default is "data files", and my excel file doesn't appear. IF I switch the file type to Microsoft Excel files, I still don't see it. If I select all file types, the excel file finally appears but if I select it and use excel 8.0 as a database type, I get an error message saying "external table is not in the expected format. Do I need to download a driver for Excel 2007??