ADODB.Connection error '800a0e7a' - Provider cannot be found. It may not be properly installed.

http://camie.dyndns.org/technical/adodb-error-800a0e7a/
http://www.cffkb.com/Main.asp?irid=143&Type=Article
http://www.iis.net/learn/application-frameworks/running-classic-asp-applications-on-iis-7-and-iis-8/using-classic-asp-with-microsoft-access-databases-on-iis