I dont know if this is the right forum to be asking but I'm sure plenty of you here are knowledgeable on video cameras and stuff, so here goes. I'm looking to get a small personal camera for video surveillance in a home setting. I've seen 4 channel DVR w/ HD setups and thats fine, but a little pricey given what it is. Basically, do they make some standalone video card to input the video from the cameras, and I can add my own external HD (for like 150 bucks off newegg for a 300GB one)? Is that possible? Am I going about this the right way? Any help or suggestion which forum this is best to go to would be great too. Thanks in advance!