First you'll want to make sure the firewire port works... assuming you use Windows, go to the Control Panel, then to System, then to the Hardware tab, and then the Device Manager button. Go to the "IEEE 1394 Bus Host Controllers" listing and expand it by clicking on the plus sign. Does the icon for the IEEE 1394 controller have a yellow exclamation mark or a red X on it? That would indicate a problem with it.
I'm fairly certain Firewire connections don't require any special third-party drivers to work, but it's been a looooong time since my video editing days so you should take everything I say with a grain of salt.
Also, it may be prudent to make sure the camera is in Playback/VCR mode.