Dear Netters, I would like to enquire if anybody has a program to calculate spin-orbit coupling elements for an avoided crossing of two potential energy curves. I would be grateful if any body could help me in this regard. Thanking you in advance. M.Krishnamrurthy, Tata Institute of Fundamental Reseach, Homi Bhabha Road, Bombay-5 e-mail: MKRISM()at()tifrvax.tifr.res.in