We had Dennis Hadlock, Innovative Technical Analysis Corp. present a class in EMF and it was very well done and very well received here. You may want to contact him at 301-881-6245. Mike ------------------------------------------------- Michael Blotzer, CIH, CSP NASA Lewis Research Center, Cleveland, Ohio blotzer#m#_michael@lims-a1.lerc.nasa.gov Disclaimer: Everything I know is wrong.