http://www.uglyhedgehog.com/t-234918-1.html I think this is what you are after.
Now that I have a little more experience I can see all the wonderful Nebulosity in that shot that I've been trying to get. I use DSS just because I have been able to figure it out a little bit. And some one has been helping with some of the finer points. Craig
Thank you. It helped that it was a cold moonless night and I am at 5000 feet. Throw in a light polluted white zone and its wonder it worked out so well. I have used it in dark zones and it is sometimes amazing.