firewire to usb?

i just bought one of the new macbooks, and much to my dismay, there was not a firewire port on it. i've seen a few different firewire to usb converters out there, and am weary of buying one. do these firewire to usb converters actually work?

Me too - among thousands I suspect!

I've been told firewire-USB cannot work as they are totally different. Apple insist it is an option. This is a serious problem for me - anyone know if they work and if so which to buy? Thank you!