Well there are a few things you need one being a webcam or a video camera that you can hook up to your video card. once you have that you'll need webcam software I use visiongs
http://www.visiongs.de/
then you need a webpage or place that you can FTP (upload a picture) to you website.
Pretty simple to set up
I have a 3com camera( which they don't make anymore) that's extremly good in low light conditions and another kodak which is not that great.
On my website I have it snap a picture and FTP to my home page, at night when I have my offline picture loaded. the webcam software is set for motion detection and will only snap a picture and upload when motion is detected. at the same time Since I have a detached garage I have my house PC FTP into my site every hour or two and grab any picure by it's file name that the other PC uploaded during the night. Most times I don't bother to have the house PC do this as I can just check in the morning my site by filename if any pictures have been uploaded. I just give the normal daily picture one filename and a motion detected one a different name,, sounds easy..it is..
I'm going to be changing over soon to live streaming video with a tilt and pan feature, so when you go to my site there will be buttons for a visitor to pan around my garage . this way also if it's raining or snowing and I don't feel like going out side I can check the inside of the garage from my house
I already have both PC's setup for remote control so I can view the others screen to see what's it doing
Pretty lazy,,huh. not wanting to walk 30 feet outside to the garage. If I could only find a way for one of the PC's to change my oil and make coffee I'd be set
:crazy