Jeff,
When I lived in Maryland I had that problem with my basement as well. I went out and bought a commercial grade de humidifier. This unit allowed the central AC unit to get the upper hand in cooling the house without the excess moisture. No more problem.
Peter Reid Koskinen Owner PRKBIKES LLC 9506 Collins Creek Drive Chapel Hill, NC, 27516 USA
H/O: 919.960.5871
Fax: 919.960.0641
Cell: 410.991.7539
Peter@prkbikes.com
http://www.prkbikes.com http://www.prkbikes.com/