Open the GridView Help and type "Excel Workbook" into the search box. Choose "Select Module window" from the available topics and review the material. You need to enable the "Include External Tables" option under F2-Edit Defaults, and your spreadsheet must be well-formed (just like the ExceDirect button creates with column names in row 1 and no blank rows or totals).

The spreadsheet must be in the Folder with your Adagio data.