If you haven't already seen this on Melissa's blog, go check it out. The Help Registry is a great idea. I wish this had been around last time I needed it. We had people offer their help and we couldn't muster up enough brain power to think of anything that someone could help us with. We got phone calls that ended up in hurt feelings when we didn't call them right back.
I'm working on mine right now. It's so much easier to do this when you aren't in the midst of complete chaos.