HELP! VGA to S-video/Composite in SF Bay Area?

Emergency!!

I have a show tonight - I'd be using my Arduino in part to do a light show for a great Prince cover band, but I need something that can convert a VGA signal to S-Video or composite. Show is in Oakland - load-in at 7pm. I'm an hour north in Sonoma County. If anyone local or in between has something like this or could even whip one up, I'd be eternally grateful and I'm sure there would be some compensation for your time and effort. Thanks much and sorry for lack of detail, but time has never been more the essence.