Take a generic object like a toaster; you photograph it and then you work on it. The finished image will have a white background with a hint of a shadow. I know you can erase the background something like Photoshop but then there is no shadow from the object.
I've been doing fine art and landscape photography so I don't know how to photograph an object and make it look like it's floating in white yet with just enough hint of a shadow to still look like it's resting on a surface.
No problem. And good luck with the isolated images! =D If you're looking at shooting common objects like the toaster you mentioned, I suggest reading up as much as you can on Macro photography as well - especially in the area of lighting.
P.S. Nice football pics in your port! ;) I especially like the one with the helmet, and the full-stadium photo.