My problem seems to be that I need to upgrade my whole system. According to:
http://dionysos.mpch-mainz.mpg.de/~joeckel/pdflatex/ (which gives excellent instruction), I need gs &friends 6.1 or above, I have 5.1. I will upgrade this now. Please disregard the other posts meanwhile. Anyway if anyone knows what causes the vertical bars in a table to act strange in pdf, please say so. (they look good in dvi and ps). thanks, Peter
