And when I say budget, I mean low budget. Here's my setup so far. I have a Nikon D40, an SB400 speedflash with off camera sync cord, an umbrella on a tripod, and a couple of muslim backdrops. I'm actually getting some decent shots but I really need to add a flash. Can somebody point me in the right direction to obtaining a cheap flash and slave for my second light. Maybe I can find something on Ebay for a low price. I'm trying to photograph my children if that makes a difference.