iSpy: Free software (system) of your webcam video surveillance

I've always dreamed of having a CCTV system in my home as I have almost always fear that at some time in unwanted people can enter it and that is why iSpy is a program that comes in handy for me, of course, an option that we can expect efficient outcomes based on the webcam to be reckoned with. Is a Free program for Windows 7, Vista, XP, etc. required. NET Framework to function properly. iSpy is