Al final aparece esto:
Office 2010 will introduce a 64 bit version of Office. With that is coming a 64 bit version of the ACE Driver/Provider which will in essence give you a 64 bit version of Jet. The downside is that it doesn’t ship with the operating system but will be a redistributable. There is a beta version available of this driver, as Office 2010 hasn’t been released yet.
2010 Office System Driver Beta: Data Connectivity Components
http://www.microsoft.com/downloads/d...displaylang=en
De todas formas si parece que MS recomienda migrar a SQL Server (Express / Compact).
AŃADO: Y aunque esto último no me parece mala opción, creo que hay un "hueco" que cubrir ahí; Se trata de una versión "embebded" ya existente en otras BB.DD.