As background I am proficient at the CD2 Creative Suite Programs, but no experience in Lightroom. Here's what I will be doing as a real estate photographer. Shooting a half-dozen shots at various flash and ambient light levels to be stacked. I have seen a video on how the files are brought into lightroom as individual shots, which are quite a clutter. Like magic, all the similar scenes are stacked up all at once and the clutter is reduced to the stacked files. At least that's what I think I'm seeing. I've downloaded several freeware programs trying to achieve the same thing, but either I'm ignorant, or these other programs fall way short. I have worked with a program called Hugin, and had pretty fair results, but it's one scene at the time. I'll be delivering upwards of 30 final shots to my agents. I can't sit at the computer stacking 1 at the time. Any help would be greatly appreciated.