please please help me with this... I'm trying to make transparent subwindows, like Blender (that 3D program for Linux y Window$, www.blender.org) properties windows, but I just can't do it, I don't find the way to do it. I'm not new in OpenGL programming, in fact I must make a robotic arm simulator and everything was fine until this :( English is not my native laguaje :P Thanks in advance. JP Cordova E.