Setting up Microsoft Excel to view CSV files online.
Open your Windows Explorer
Select View from the file menu
Select Folder Options from the View menu
Select the Microsoft Excel Comma Separated File Type from the File Types
Press the Edit button
If you don't have the MIME type application/vnd.ms-excel then enter it in the MIME type. It must have the vnd. in the MIME type.
Select the Open action
Select Edit
Select the Browse button and locate Microsoft Excel
Press the OK button