I am a great fan of the Xfig program; and, countless are the nights that I spent with Xfig generating schematics for my talks, theses, and papers.
Today, I learnt about WinFIG, a windows based Xfig — I installed and used it too, and, the experience is not too different from that of Xfig; occasionally, a window with some German question pops up on the screen; fortunately, the answer buttons are in English!
Winfig allows the figures to be exported, among others, in eps and ps file formats; so, using the schematics in LaTeX is also rather straightforward.
Have fun!
