Okay, so in this instructable we will be turning an Eyetoy into a webcam for Windows Vista. If I find any drivers for Windows 7 and XP I will update this post, however I have heard that the Vista driver is compatible with XP systems. Essencially what we will be doing is installinga new driver, if you don't know what that is I will explain. A driver basically allows your computer to communitcate with other software. They eyetoy is missing a driver, when plugged in your computer will recognize that it is a picture/video device but not that it is a webcam, you need to install a driver that will allow your computer to recognize it as a webcam and use it as one.
This instructable should cost you no money, assuming that you already have an eyetoy. The driver download is free.

Step 1: Step 1: Designating Your Model

The first thing you want to do is check out what model you have. If you have one of the older ones it should be a logitech, if you have the newer silver one it should be a namtai. You can also check this by checking your device manager via the control panel, it should designate it as either a logitech or namtai. Next what you want to do is go to this website: http://search.4shared.com/q/1/eyetoy
This is the result of searching "eyetoy" on www.4shared.com
Select one of the two choices as shown in the picture below, choosing either the Namtai or Logitech version of the driver. Also make sure you are selecting an option with the author by the name of Thomas Dobson.

Step 2: Step 2: Downloading

Next you want to proceed to download the file you selected. The download button should say "Download Now (no viruses detected)" Go through all of the download steps. Just a note, it will ask you if you live in a 50hz country. Countries like the US and Japan are 60hz countries, if you don't know what area you live in you can google search a list of 50hz countries. Also you will most likely encounter a box that just says "???????" and the option to click OK, it doens't mean something went wrong so just click OK and continue. Finish the download and your Eyetoy will be a fully functional webcam! It's actually a pretty high picture quality so have fun!