The great dia program for linux cannot export to linux. Also, if you have not setup lpr properly to work with cups, you cannot print from dia.
Dammit. So now I have to export to a png file (which is at the wrong dpi, so the picture is very small). The drawing I did to scale when printed out is nowhere near the correct size.
Use a program that can export to PDF. EPS is fine, but people expect PDF.