For converting to png, there is a tool called dvipng, see her: http://freshmeat.net/projects/dvipng/?topic_id=854 It's quite quick and I've implemented using it here (no cacheing!) http://www.lyx.org/~chr/wiki/pmwiki.php?pagename=Math.Math /Christian -- Christian Ridderstr?m http://www.md.kth.se/~chr