It's a small, small world, and you'd better get used to it. Anyone who's spent time around children knows the whole universe revolves around their pint-sized needs. And it isn't any different for you as an entrepreneur. An estimated 4 million babies will be born next year, and the U.S. Census Bureau projects that number will gradually increase, reaching a birth rate of 5.7 million per year by 2050. Though you may at first think your business has nothing to do with kids, think again. Kids influence parents' purchasing decisions from the time they can talk-probably even from the time they can point. That minivan is cool; that restaurant has the best kid's meals. And if you want it to be your restaurant or toy that's the coolest, read on to find out what our younger friends (and their parents) will be begging for in 2000.