Hi guys.... Some beginner questions here..... 1. Can the SB-800 speedlight work with the D40 SLR? 2. Can the on-camera flash of the D40 wirelessly trigger the SB-800? If not, what do I do if I want to use the SB-800 off camera? 3. How do I create professional-quality images with the SB-800 on the camera? Do I just bounce it off the ceiling and use the diffuser? Any other tips? Thanks!