It depends on how many cameras you are going to have and how long a loop you need/want to have. The Prob with using your computer is you would have to partition the drive some how or use a 2nd HD installed in the computer b/c you are recording in a loop.
The best result I have is using good $120+- lipstick type B&W cameras. They are small but have high resolution (you need this b/c if you can not ID the person or plate the whole thing is a waste). Get teh most lines you can afford. Appro makes the best DVRs. They ain't cheap, but they are good. A 1TB drive will get you a long loop and you can set it to only record with motion or just continuous. I prefer continuous b/c I don't trust the motion feature. I have 2 drives linked together in the machine and get about 2 weeks worth of loop. I have several cameras. You can also access these over the internet from another location to see what is going on.
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13 Smiles per Gallon:
66 Bonneville wagon
66 Bonneville 2d HT - In perpetual progress
2005 GMC L-33
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