If you are running Win 7 64 bit version using ODBC is a problem. If that is the case I suggest moving to ADO OLEDB and data providers. It seems like there are still a limited number of 64 bit compatible ODBC drivers and in some cases such as Visual FoxPro none are coming from Microsoft.
If its not a 64bit issue then the problem could be related to a permissions issue.
Hope this is of some help.
John W.