Benny, you'll be glad to hear that there is a Yahoo group for SheetCAM.
It's being written by the same guy who wrote the Keygrabber utility for Mach2. When you download it there are tutorials included. I played with it a little a while back, it worked pretty good. He's added a lot of features since I last looked at it. Anyone who needs a 2.5D CAM package should really take a look at it. He's filling the void of low cost 2.5D CAM.