Hi. I''m currently following the excellent tutorials found here, and must say I''m very impressed. I have, however, run into a problem. In Lesson06 we encounter functions like auxDIBImageLoad() for the first time, thus, I suspect, needing the #define for the first time as well. As it turns out, gl/glaux.h is missing from the OpenGL library included with cygwin . Has anyone here solved this problem? the Mesa web-pages suggests it should compile under cygwin, would this be the way to go? TIA.