I made a skiing skin for the Verizon razr v3c/v3m (and possibly others). I will post it if there is enough interest, because writing a guide on how to do this would take quite a bit of time. It would help if you already knew something about hooking your phone up to the computer to view files, because that is probably the hardest past. Here are some pics:
Instead of the Verizon logo being on the outside screen when the phone is open, the NS icon is:
This is a shitty pic, but it shows the menu skin. Each of the main menus has a different main picture, and the title bar has a ski from the company that athlete rides for: