Typically you'd use ADO to connect to the Jet database, so MDAC would need
to be installed. However, MDAC 2.5 was the last version to have providers
for Jet databases, so if you've got a newer version installed, you'll need
to also install the Jet Service Pack, which you can get at http://msdn.microsoft.com/data/downloads/updates/default.aspx#jet
