This is a clean & simplied example of the basic features available.
If these examples do not work it's because you need the connector installed,
this same demo with IntraLaunch extension checking
shows how to check for first.
A more sophisticated example
can be found here, listing files can be found here. A getting drive information example can be seen found here.
If you are developing your .html files/menus locally (without a web server) you may need to enable Allow access to file URLs first.
Open write (maximized)
Open notepad again (but refocus existing instance if already open)
Open Control Panel
View 'My Documents'
Find and Run Excel
Open notpad.exe (file not found example, custom error messages also supported)