There is no webcam on your computer and you are not going to purchase it in the near future? And right! All you need is Bluetooth and a smartphone.
SmartCam is a free, open-source application that works only on Windows XP and Vista, as well as on smartphones with Symbian S60, Series 2. 3. However, since the application runs in Java, it will probably work on other devices.
After downloading (346 Kb) and installation on the computer, carefully read the read me file and install the client for the mobile phone. Now SmartCam can work with Skype and many other video chat services.