Graphics editor Inkscape can understand Latex equations, using a plugin. This plugin seems pretty standard, it was installed in the inkscape version that is installed by debian package manager (debian squeeze). A message came on the screen the first time, and asked me to install a dependency (python-lxml) after that it works…. I can have equations (and greek letters easily!)
Now you can have beautiful equations and greek letters from LaTeX and insert them easily in re-scalable vector graphics images. They will match the text of your latex document.
End of advert.