You mentioned Nikkor 10.5mm Fisheye, so I was wondering if you used the Commander Mode.

For example, the Nikon D200 can be put into Commander Mode to allow the on-camera flash to trigger an off-camera flash or flashes. However, if I recall correctly, something like the Nikon D50 does not have the Commander Mode, but can still use something like the Nikon SB-800 Speedlight Flash on-camera to trigger other Speedlights off camera. This basically eliminates the need for something like a Pocket Wizard since the camera body/flash triggers the other flash units.