Jerry, go to

http://www.aircondition.com/wwwboard/index.htm

and post your question there.. or do an archive search there. I've used this auto A/C board for years... the guys there are real Pros on all manner of auto A/C issues and are extremely helpful.
Your problem is not uncommon... its bacteria living in your A/C-heat system... these guys can tell you how to get rid of it.
KenP
1996 S500 Coupe