It is my understanding after talking to Jonathan Meyer at NI Week that the OpenGL 3d library is not exposed to LabVIEW users and would be of great benefit for folks like myself who need better 3d volume rendering tools WITHIN LabVIEW to render X-ray computed tomography and other slice data. So my idea is to please expose these tools as soon as possible. Currently I use the ActiveX 3d Surface Graph to display multiple stacked surfaces. It is very slow with a lot of slices and totally unstable with Windows Vista operating system. HELP!