Thanks, will track some one down who knows how to do it as well.
http://www.metzerfarms.com/SexingVideo.cfm?CustID=1352957
Here is a video on sexing them at day old which actually works better for me when they are a week old. I tend to get a better out come at a week old. Once the babies are about 2 or 3 months old you can hear the difference in the quack. The males sound like they are a raspy sick sound and the females actually quack. At 6 months the tail curl this is on ducks not sure of geese.