Moetle, thanks

we actually call it our Christmas (and more money is certainly spent now than in December, heh). Bad timing, Grandaddy Nurgle!
BloodFather, the rules are
here. Basically, there's your usual categories like Single Figure and Unit and whatever, and this year there are two sections to every category--"Open," a more casual competition, like for people who've never entered a competition before, and "Master," for the more experienced. Weirdly (or maybe not? This is my first contest), Open has a single gold, silver, and bronze award to give out, while Master rates each entry individually from no award up to gold. Seems like it'd be the other way around.
There's also Manufacturer's Awards, so Wyrd or Dark Sword or whoever could also pick your mini out for an award outside of the GenCon judges' decision. So it looks like there are lots of ways to win stuff.