If you cannot afford a webcam, here is a tool that can do the job.
Webcam Simulator is a software that allows you to simulate your webcam. For that, it can use a pre-recorded video or photo album to replace it. It can be used on multiple applications simultaneously. In addition, it is compatible with popular messaging software like Yahoo, MSN, Paltalk, Camfrog, Skype, AIM, and ANYwebcam. Webcam Simulator is a fully standalone software, which means that it requires no additional codec to diffuse the video or the image. Thanks to this software, you can now make your chat more pleasant and share your favorite videos with your friends.