How can I make wifi automatically go on when my G1 boots up

I've got CM6 on it, and every once in a while the power goes out, the battery eventually dies, the power comes back and it boots up but no wifi. I have the thing in a faraway place and I get to it via ssh, so it's annoying to have to go manually turn on wifi when it reboots. Is there a script somewhere I can run in userinit.sh that will turn on wifi?