I have a Nikon D40 and an SB600. I want to purchase a system for triggering my flash off camera. How can I do this? The Sb600 can only operate in slave mode. So i need something to trigger it. ---Pocket Wizards. If i were to use pocket wizards, will one act as a master and trigger the 600 through the wireless slave mode? or do I need 2 pocket wizards, one as a transmitter and one as a receiver? -assuming i need 2 pw's I have to purchase a hotshoe to pc sync cable to use the pw with the 600, correct ? ---SB900. this i know will work, but is borderline expensive for my budget. And is really only useful if i plan to use Speedlights for the rest of my life. At least the pocket wizard can also trigger other strobes if I had the right cables, correct ? If anyone has any other suggestions I would be grateful for the advice.