This usually indicates that you either do not have Microsoft Excel installed or that you do not have Excel set as the default program for CSV files.  Follow the steps below to ensure that Microsoft Excel is set as your default program for CSV files:
  1. Start >Default Programs
  2. Click Associate a file type or protocol with a program
  3. Locate the CSV option and click it once to highlight
  4. Click Change program
  5. Click the Microsoft Excel option under Recommended Programs
  6. Click OK