Getting Sony TRV-22 Cams Working w/ G5s?

Phil wants to take a bite out of this issue: "I'm having a time trying to get my Sony handycam to work with my Mac G5. Sony provides software for all Windows environments, and a USB driver and 'shim' program for Mac OS, but not Mac OS X. The Mac documentation says to hook a camera into the Firewire port, no software needed. So is there a device that will allow me to go from USB to Firewire, or do I have to spend a lot of money on an OS 9 video capture program? I can't seem to find an answer anywhere I look, and was hoping Slashdot readers could help me out, because I know I'm not alone with this problem. Thanks."