I am going to make my first serious pic with my new pentax k10d. It is the family in the house at night for an xmas card. I bought a tripod just for this. I was thinking of putting a blanket against the wall for a backdrop. Can I improvise some kind of lighting tools of some sort to help in the process? Any ideas on good information to get me off the ground? I know I will need to play with my white balance and use a big file size, high quality. I need to do some research because the teenagers are not going to have much patience waiting around.