My Imac is not reading my WD harddrive via firewire...

Recently ive got a Western Digital 500 gb hard drive and it connects fine with usb, but as i want to connect with firewire cable, my mac wouldnt read it. Im just wondering do i need to install anything at all on the mac? I went to network utilities and it shows firewire isnt connected to the mac.

I don't know this from firsthand experience, I've just read about it, but there are people out there who report problems with the WD drives and firewire. Maybe someone else will have more to say.
Regards,
Steve M.

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