We just bought one (SB600) today for the wife's Nikon D50 and it flashes. I am trying to figure out all of the settings and how it works with the camera - right now it is washing out the photos a bit, but I am sure that problem is the operators, lol. We are currently diving into the manual - probably should have done that first.
What did you mean by "nothing came up" it doesn't do anything at all, or is there something that shows up on the camera that I might be missing? Will let you know if/when I figure my end out.
Jeremy