Repurpose iPod firewire charger to work with Apple Dock USB devices

Repurpose iPod firewire charger to work with Apple Dock USB devices

I have one of the original Apple iPod firewire chargers that I haven't used for years. With my growing number of USB devices, I'm now thinking how can I repurpose this firewire charger so that it can charge Apple USB devices, say the new iPad 2 device? Is there a cable that connects the FireWire power pins to USB power pins or some other method to this? Or would a Firewire cable to Apple Dock cable work?

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