Yeah, ummm, I'm going to start by saying that is impossible in the way that I think your thinking. Maya won't export to OpenGL partly because OpenGL isn't a application nor a file format. OpenGL is set of programming commands that allow you to "create" the figure.
Now if its any consolation all maya renderings and the engine itself is OpenGL. Now if you feel in the learning mood you can go a write a program to read the maya scene files and work with it from there, but that may be way too much work for anyone.
Now if your looking to export it into a game format, your going to have to look up how to import the maya scene files into that game.
Anyway, I hope that helps you.