I just read the post "can this be done" and then found this: http://ms.gis.umn.edu/docs/reference/vector_data/VirtualSpatialData This makes me think it might be possible to join a layer to an ODBC table. Previously I thought it was only possible to join to a DBF. Is this possible? I'd like to join an Access DB to a MapServer layer. Thanks. -Abe