What type of interfaces and graphics "demo" software do you have? We have a 3130. I would be interested in what you have. -- Brent L. Bates NASA-Langley Research Center M.S. 294 Hampton, Virginia 23665-5225 (804) 864-2854 E-mail: blbates at aero4.larc.nasa.gov or blbates at aero2.larc.nasa.gov