In 64-bit Windows the default ODBC Administrator application only shows 64-bit drivers. You must run the 32-bit ODBC Administrator to see the drivers that Tableau uses:
Aside from that are you having any problems connecting from Tableau?
My fault! I completely forgot - been a little while since i set this up again, but I did this at some other point in the past and should have remembered. Thanks for the reminder By the way, the Hive piece is working great!