I plan on setting up a four camera security system at my house, expandable to 8. I'm an IT consultant so I have lots of computers, hard drives, etc around. I was thinking of setting up one of my lenovo desktops as the server, running Win7. I assume I'll need an 8 channel camera card running off a pci-e port. I could use a recommendations on cards to get or avoid. I'll need some way to get the camera data to the server. I was thinking of using powerline routers. Does that make sense? In general I need ideas how to begin on this project.