I am working in a scheduling system that downloads scheduling data into an
excel spreadsheet. I would like to see this data in a calendar format like
the calendar format in Microsoft Project. An example of the scheduling data
is

Operation Start Date Start Time Finish Date Finish Time
Package Mat.X 11/17/08 08:00:08 11/17/08 16:08:09
Package Mat.Y 11/19/08 08:00:08 11/19/08 16:08:09
Package Mat.Z 11/20/08 08:00:08 11/29/08 16:08:09

Is there an add-on that could convert this data so it would look like a gant
chart in a calendar?

Thanks!