Howto connect to an access database (*.mdb) from Vista x64?

I can't connect to an access database (*.mdb) from Windows Vista 64 bit.
Since my computer is brand new I thougt it was missing the MDAC so I thought a download of the latest MDAC should fix the issue. However, it turned out that the latest MDAC is the only version for Vista x64 does not include the Microsoft JET Engine anymore.

Anyone who knows what to do to be able to use the access database?
Or if not possible, what is the easiest way to fix the problem?

Best regards
Daniel