Solved! Go to Solution.
In LabVIEW right click on your 3D graph and choose CW3DGraph>>Export Style to export the graph style to a file. Then go into powerpoint and choose View>>Toolbars>>Control Toolbox. On the bottom right hand side is the more controls box. Select this and then choose the CWGraph3D object. Drag a box on the powerpoint slide and the graph object should appear. Right click on the object and go to CW3DGraph Control (National Instruments) and select Import Style and select the style you exported previously. When you run your slide show you will have the ability to rotate/etc what you imported from the style.