The Access piece should be failrly straight-forward.
- Open the report.
- Go to the Database menu and log on to the SQL Server.
- Go to the Database menu and click on "Set Datasource Location"
- Point the table from the Access database to the table in the SQL Server database and fix all the field references.
You may be able to do the same thing with the Excel file, but I haven't worked with them as data sources so I'm not sure.
-Dell