Looking at the Nuvico 8ch DVR for home application. I have a wireless network and was thinking of just using my laptop to record any crime if it happens. This would save on the cdrw drive and would let my buget get a larger hard drive. Is my thinking correct? I was looking at the 300gig HD and was told it would last about 1 month. Also signing up for a dealer at www.vsscctv.com. Any suggestions?