First thing you need to do is Max out the Memory (RAM) If DV is what you are going to use the machine for then you can never have too much. Which Mac are you planning on? The iMac G5 should suit you if you have no plans for Dual Processors. Go for the biggest bang for the buck. Ideally, your DV camera will have a Firewire (IEEE1394) connection so that the Mac can suck down the video in Real Time or after the shoot. USB 2.0 is also included on the iMac but while the theoretical speed of USB2 is higher than Firewire, it does not happen in real life. Firewire frequently achieves its theoretical speed. iLife 05 has a comprehensive suite of movie making software, included with your new machine, so you should be ready to roll straight out of the box. That's even before you have installed Final Cut Express.
So, now that the wife is safe in her Mac world, you insist on committing suicide by continuing to use the PC for email! Oh well, there is no accounting for someone's death wish
Hope this helps
My wife is just starting with DV, has been given Final Cut Express 2, and has had a bad time with previous Wintel experiment (poor capture etc). I'm planning to get a Mac specifically for video editing (and perhaps other graphics-oriented things) - will still use the Wintel for email, Office, etc. I'd prefer not to spend the extra money or extra space for a dual-processor Power Mac unless necessary. She'll be doing home videos, but also some short stuff (5-10 mins max) for church use - that was the reason for Final Cut Express.
How can we configure an iMac for best capacity and performance? Given that, what limitations would remain?