Welcome to Vector Linux! I think you'll find the forum and the community as a whole to be friendly, helpful, and welcoming. If we have an advantage over Zenwalk (which I also like a whole lot) it's our forums. I've seen some decidedly unhelpful if not downright hostile posts in the Zenwalk forum. It's amazing how just a few people can change the whole flavor of a forum.
Anyway, VL Light is great for older hardware like yours. Enjoy!