In my opinion, the idea of overpopulation is really a myth. In industrialized countries, population growth tends to level out, and in the developing world, death rates and infant mortality stunts growth. That's not to say that population growth is stagnant, the world is still growing.
But what's the issue? We grow and can continue to grow more than enough food, and crop yields increase every year with irrigation, new strains of crops, better equipment and technology, and better agricultural methods. (If I can jump on my pedestal for a bit, ethanol is idiotic and the industrialized world and the US in particular eat way too much meat, which is a bit of a drain.)
Malthus was the guy who freaked out about overpopulation, this is from memory of my Poly Sci classes about three years ago, so bear with me, but: Malthus (Or it might have been Julian Lincoln Smith) talked about this small island, and believed that overpopulation would destroy it. He looked at the population growth and the amount of food the island could produce. What actually happened is that the population of the island leveled out, and with better technology, the island could support more people.
If you want to critique AIDS, governments seizing AIDS funds because of corruption would be a better argument, or the fickle nature of AIDS funding.
Also, well said MissConstrue, my brother has been in East Africa for a good bit of time primarily working (volunteering...) in health care--a large part of his job is AIDS education. Mostly at a grassroots level. I actually, relatively, just got back from visiting him.
David