I have a new kitty!
As I was getting ready to leave work yesterday, I looked to see if the kitten was still there. It was there and crying loudly. The two little boys that live in the house came outside and popped the hood to get the kitten out for me. They said it had been there for a couple of days and told me it was a stray and their parents wouldn't let them keep it. I offered to take it home with me.
A friend of mine owns a pet supply store, so I stopped there on my way home to get kitten food and a couple other odds and ends for it. The kitten is now happily camping in my bedroom!
Now all I have to worry about is the other (adult) cats being nice to the little one.