> Warming the crystal by about 100 degrees (from -30 F to 45F) Well they may be experts at nuclear fusion, but they seem to have failed Hard Sums! :-) Cheers, Howard Winter St.Albans, England -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist