This might not apply, but easily three-fourths of the kids I've worked with as beginners or near-beginners had their boots on too loose. I don't know if they do that themselves, or they forget to tighten them before they come out, or they just don't know they're supposed to be tight (and hard to walk around in), but it happens, somehow, a lot. So I'm going to suggest that the first thing is to make sure the cuff of his boot is snug around his leg, there's nothing in the boot except his foot and a sock (i.e., his pants are outside), and that the boots are a reasonable size for him to begin with. He won't be able to use the edges, otherwise.
Find a very gentle slope with a flat runout. Go there. Put his poles aside, if he has some. (Yours, too, just to be fair.) Talk about "standing on the sides of your feet," rather than about using your edges, and try it--both the insides and outsides of the feet. Move into sidestepping and herringboning up hill (being ever mindful of how quickly that gets boring) then slide down. See if he can turn in one direction or the other by standing on the inside of one foot (if he's using skis with some shape to them). See if he can stop before he gets to the bottom. As soon as he can, get him on the beginner lift and start getting the mileage in!
[ November 07, 2002, 06:03 PM: Message edited by: daevious ]