Has your intuition informed you of a intruder? Or car burgaler? I ran across a cheap way to use a "constant record" or my favorite "motion detect recording" through my logitech webcam and windows software right onto my laptop. Heres a good link thats extrra informational !
Download YAWCAM HERE http://www.yawcam.com/download.php
Set up Logitech WebCam as Motion Detector and Send Alert via SMS Text Message