The 64bit version of office 2010 leaves us a bit wanting. For those users that uninstall Office 2007 and install the new 64 bit addition, a host of feature will not work without the addition of the 2007 Office System Driver Data Connectivity components.
Here are the details on what is supported:
Requires a 64-bit ActiveX control. Microsoft Office 2010 does not provide a 64-bit version of this control.”
Download and install the 2007 Office System Driver: Data Connectivity Components
The 2010 component can be found at Microsoft at: