If you would like to convert any image to vector, there is an easy way to do that without using any software like Photoshop or Illustrator. Vector Magic allows you to convert images to vector directly from their website.
Just upload any image from your computer. It is very easy to use, just follow the instruction and you will have your vector image. Then select the output vector (EPS) or in Bitmap (PNG) to download. They have are different prize-plans, but if you register new you will get 2 tries for free.