Graphical interface

Does anyone out there own a Nokia with a colour screen? I’d like to know how easy it is to transfer an image file from a PC to your phone and then set it as wallpaper. If you’re feeling reeeeeeeeeally helpful, could you tell me what size the image on your wall paper is as well.

My first BitPass’d products are going to be versions of pictures from my gallery shrunk down to wallpaper size for as many mobiles as possible. I’ve just managed to mine the Sony-Ericsonn sizes, but Nokia’s site is only about selling so I couldn’t get any freebies to examine from there.