If it is a personnal webcam then you are going to have to leave your PC on 24/7 anyway, so you may aswell use that along with video capturing software to save images avery 10 seconds or so to a directory on your PC where you have server software setup, then setup some kind of script to refresh the users page so the most up to date image is displayed. Although this will be limited to your bandwidth, unless you have very few visitors. If you have a lot of people visiting then you may want to setup your computer to transfer images via FTP to a hosting account, such as Dreamhost, then run the script from there