I am interested in doing some nightlife/club photography. I know a couple party promotors in my area who host parties for mostly young adults and college students. I know some of them are looking for photographers so I am planning on contacting them to see if I can start shooting for them. Just a couple questions though. My gear is listed in my sig, and as it says I have access to a 420EX flash unit so that would most likely be hot shoe'd into the camera. What are the best settings for taking pictures in a DARK environment? It will be barely lit because once the party starts, the lights go off, so if I am taking pictures I am sure I will need the flash. Also, I will the camera will be handheld, so I won't be able to use long shutter speeds. Basically what I am asking is what should I do to get that "dark" look of a club, but enough light to light up the subject in the picture? Most places have ceilings that aren't too high (maybe 12 feet or so) so would bouncing the 420EX flash be too much? I probably would be using my kit lens more than my 50mm, since I would be able to zoom in and out, but will an aperture of 4.0 be open enough? I guess I can answer a lot of these questions just by going into the club and snapping some shots, but I just figured I'd ask here first so I am prepared.