What exactly do you want to do with spreadsheet once you have it open? The
code I gave you allows you to open the spreadsheet (usually you would set
visible to false because your code will perform the modifications rather
than the user) and manipulate it with code. You can do things like place
values in particular cells or set formatting. Basically, anything you can
do with the Excel GUI, you can do programmatically once you figure out the
correct objects, methods, and properties.