I used a piece of animation software called iStopMotion on my Mac Book Pro, all I do is:
Connect my Canon 20D using a USB cable to my Mac, whilst the software is set up ( selecting the camera as the device, rather than the default web-cam )
Place my camera on a small tripod (or books in my case due to room) on my window seal or where ever you desire.
Hit the start button and away you go.
I had to make sure that all my camera batteries are charged because unfortunately I can't run this camera straight from mains which is frustrating. Unlike my Mac, which I could leave running all year.
Might make a video on how to do it for the first time.