I can't find information on how to configure Lightening for Windows 7. I downloaded Lightening into Thunderbird, but I don't know what it's supposed to do, if it's downloaded, or if its active. Also, I imported 2 calendars into Thunderbird and see the names in my menu list, but the calendars aren't visible; I also selected the option to show all calendars & it still does not show. How do integrate these 2 calendars so i can also view them?