Does anyone know if the Rocketfish 6" A/V cable works for the iPhone 3g? I really don't want to pay apple's stick-it-up-your -a$$ $60 price just to have TV out on my iPhone

http://www.amazon.com/Rocketfish-Cable-Select-Apple-Models/dp/B001AO2TCW/ref=sr_1_1?ie=UTF8&s=electronics&qid=1230056552&sr =1-1