Sounds easy enough, thanks very much.
The current system has a small old TV, think we will replace it with a 24" 1080p monitor, it will actually take up less room due to the smaller bezel.
Will the NVR also be able to update itself via the internet and update the firmware on the cameras?
Sorry Nick I did draft a reply to your trust and then got snowed under
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You'll have to update the NVR which will in turn update the cameras
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As Bigpops said above, if you're cabling everything back to the NVR then it's plug and play. Will probably dish out 192.168.255.0/16 range