QUOTE(jaeGTS @ Mar 7 2008, 08:14 PM)
wouldnt you also need to find the software needed for the navi (compatible software) if u decide to replace the hd?
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What you would do is ghost your old Hard Drive over to the new one, so that you wound up with an exact duplicate of your old Hard Drive, except with more free space. That's the general idea, anyway. You'd actually probably have to fiddle with the image to reapportion the free space appropriately.
At any rate, I'm hoping that eventually someone will figure it out and offer a service to upgrade your drive to a 40 gig model. Having an extra 10 gigs of music storage would pretty much satisfy my needs.