Here was my listing originally:
The photos are pretty good, but the best I could edit the background was to a light blue shade using Picasa.
Here are the same photos editing using FotoFuze:
As you can see, it makes a huge difference! There is a brief tutorial here on how to use FotoFuze, but I found it to be pretty user-friendly.
I should note that you really need to have a smooth black or white background in order for the process to work; I tried using this with some of my older photos taken of items on metal and on a refrigerator and was met with less than stellar results. My background in these photos was simply a piece of printer paper, so you needn't get too fancy.
You can view my listing here if you want a closer view of some of the thumbnails in the second image.
The best part about all of this? It's free! Really, you should try it. Really.