The problem is not openGL which is available on nearly all recent windows hosts, but ptk 800. I know that a not-yet-available development version of TkZinc has been successfully compiled by TkZinc author (not me, but P. Lecoanet). It required some minor evolutions in ptk804 by Nick Ing-Simmons. Thx to Nick! Another tricky problem is the compiler used for Tk and for Tk::Zinc ...

So we could hope that Tk::Zinc will be available on windows plateform. If you are interested in, let us (or Patrick) know it. If you can help let us know also...