cctv

i want to use an old a4tech webcam in my old celeron laptop(which i also want to use as answering machine/fax how to do this?) . i was told til 3 m lang pede ang haba ng usb cable mga 7 m ang layo ng laptop sa pag lalagyan ko ng webcam pede ba to? and what software para may motion detection...

id like to use an old web cam as 'cctv' how far can i place it from laptop, 5 m? 10m? what free software ? how can i make it a motion detect does this depend on the web cam (a4tech) or software.?