I had a cheapo cateye light last year and it worked fine.

You don't really need much lighting because the streets are well lit. The guy who rode with me last year had his battery die half way through the ride and he was able to make it to the finish line without incident.

I just got a CygoLite Nite Rover headlight and I really want to use it on the ride. Unfortunatelly, the mounting bracket will not fit on my Lemond OS handlebars so I'm going to ride the Vintage Trek.