i'd say the same thing... have fun and make sure they enjoy the game.
if you can get them to throw half-way decent, it's a huge huge plus, but i'm not sure what's natural and what's taught with that.
most of it is just general athleticism and devloping some kinesthetic awareness through playing any sport. let them learn more mechanics later (high school) when they are a little stronger and more in tune with it all.
you gotta make it fun because it can be tough for some youngsters to feel confident because you'll see most of the better players are simply physically stronger, but by high school it all evens out. if they like playing, try to keep them sticking with it.
one drill i kind of like because i think its important is a "clap drill" for little guys.
get them into a stance, then the a coach claps once. the first clap is the signal for them to stride and get into a hitting position. this is what eric was talking about not lunging or overstriding. foot strides towards the pitcher, but body weight goes back -- kind of counter-intuitive, especially for young guys. but really important to understand. then the coach claps again and you finish the swing. you can take your time clapping or clap real quick twice. mix it up and try to make some game of it, but try to impress the point that the stride and the swing are two separate movements.
another drill/game when throwing that kids usually like is a competition to throw to a partner and catch. each time the ball is dropped/missed, both partners turn their hats a 1/4 turn. so it goes side, backwards, other side, out of the game. makes a little fun and also has them concentrate on throwing the right way and paying attention.
but whatever you do, like eric said, have some fun.