Help! I want to transfer several home videos from several different camcorders to iMovie on my MacBook Pro. The problem is: none of my camcorders have a Firewire port. They only have usb ports. Can I still somehow get these videos into iMovie and, if so, how? My tech skills are low, so please don't hesitate to be detailed. (Are there adaptors that I can use to "fit" a Firewire to the usb port on the camera?) Thanks.