I've had a lot of success running OpenGL on the N900. The main drawback, was getting VBOs running, the QT OpenGL ES2 only support direct upload of arrays. To take that jump I use the Nokia Qt3D system, which will be released officially with version 4.8. They've set up their own headers for OpenGL ES 1 or 2. It's not ready for prime time but getting close. Download it from Gitorious at http://git.gitorious.org/qt-labs/qt3d.git. To download, you have to first download and install a GIT platform and then at a command prompt type: git clone http://git.gitorious.org/qt-labs/qt3d.git and that'll put it on your computer. You can then compile it with Qt Creator with version 4.7X and then it's ready to use. Then you compile your program in Fremantle by selecting it in Qt Creator and then your program will download and install automatically to your N900 through the USB port if you've installed the Mad system on the N900.