i'm aware of the standard drawing tools (dia, kivio) but have never had need of any sophisticated diagrams until now. here's an example of something that's as complicated as i'll need to get: http://www.miun.se/ImageVaultFiles/id_3627/cf_7/Omni_od_small.jpg anyone out there doing stuff like that? and with what? thanks. rday -- ======================================================================== Robert P. J. Day Ottawa, Ontario, CANADA http://crashcourse.ca Twitter: http://twitter.com/rpjday LinkedIn: http://ca.linkedin.com/in/rpjday ========================================================================