Hi all. Just checking the results of my research - I hope this has a simple answer, and I'll look like an idiot for asking... Currently I have a D700 and an SB-600, and an off-camera cord. I'll shortly be attending a wedding, and would like to take some evening shots of guests, when it'll be dark. It'd be nice to add a second flash for fill lighting (if I can get someone to hold it, or strap it to my elbow). I don't do much flash photography, and if I get into it properly I'll pick up some studio heads, so I'm after a cheapish solution. Failed option 1: Use the SB-600 wirelessly in slave mode, and put an SB-400 on a cable. I think this won't work because the SB-400 can't be a master. Failed option 2: Use the SB-600 as a master and get an SB-R200 to use as a slave. I think this won't work because the SB-600 can't be a master. Remaining options: a) Forget the cable and use the D700's on-board flash as a master, hoping it won't show in the image, then use the SB-600 and an SB-R200 as slaves. b) Find an SB-800 on eBay (or get an SB-700, or, big budget, an SB-900) and use it to drive the SB-600. c) Find an off-camera cord splitter (do these exist for Nikon?) and get an SB-400. d) Various expensive third-party options. e) Give up, and use a reflector. I have manual flash options, but it'd be nice to have proper i-TTL. Suggestions, please?