Sorry, I posted too soon! More experimentation has resulted in success. Again, sorry for wasting the bandwidth. Dave -- Dave DeMers demers at cs.ucsd.edu Computer Science & Engineering C-014 demers%cs at ucsd.bitnet UC San Diego ...!ucsd!cs!demers La Jolla, CA 92093-0114 (619) 534-8187,-0688 ddemers at UCSD