Just getting started using off camera flash, so I need some help. Here is the area: http://flickr.com/gp/96077153@N00/5XHx31 We are going to do family portraits here on Christmas day. I want to have a few people on the stairs and some below them in front of the stairs. And I want to make sure I light it so that you can still see the lights on the tree. Here's what I'm working with right now. Do I need anything else? Camera Sony A700 1 Flash on a light stand with a shoot through umbrella I have another Minolta flash that doesn't do wireless. So I could put it on the camera if needed. Help please!! Thanks!