It is not exactly spelled out in the instructions from what I see, but, I did create multiple system data sources - each one pointing to each tax modules directory 18tax\cdata, 18tax\pdata ....

In Access I  -  select external data, new data source, from other sources, odbc database, link to the data.  I then click on the MACHINE DATA SOURCE tab.  It only gives me 1 option for LacerteDSII.

I was thinking I would have multiple LacerteDSII - 1 for each one I setup in ODBC, pointing to each tax module