Is it possible to apply a border around groups of data.

For example, give the the sample sheet below, a border would surround the
groups of fruit. Borders would highlight the Apple, Orange, and Pear
sections.

A B C
====================
Apple 12 13
Apple 13 2
Apple 4 5
Orange 40 12
Pear 45 13
Pear 4 11

Is thier a simple way to have this automatically applied or must it be done
programmatically. The data within the sheet is refreshed daily. In lieue of
setting the borders manually, I'd like to have a more automated approach.

If it must be done programmatically, what would the routine look like in
general. Would I need to scan the column containing the grouping field to
help define the range or is their another approach to setting the borders?
Lastly, can the code be tied to an event that run when the workbook is opened
and the borders haven't been applied?