Webcam Surveyor is a simple application that can convert a PC into a video surveillance system.
All you need to start watching is a webcam. The program will run in the background looking at the fixed point that you selected. Thus, when motion is detected, Webcam Surveyor starts recording.
The program includes support for recording most famous formats of both video (MPEG or AVI) and audio (MP3 or WMA), and it captures single frames and even digital zoom for recording.
With Webcam Surveyor you can set the alert to detect movement in several ways: a custom sound, start another program, send notice by e-mail ...