I have done this in the past using the NotesSQL driver. The latest version is 8.5 which can be found here:

http://www14.software.ibm.com/webapp/download/nochargesearch.jsp?cat=&q0=&pf=&k=ALL&pn=&pid=&rs=&S_TACT=104CBW71&status=Active&S_CMP=&b=&sr=1&q=notes+sql&ibm-search=Search

The ODBC interface require an authenticated Notes client ID -...