This thread has more information on creating an album and using it to decorate your profile page.
http://www.yorkietalk.com/forums/yor...ake-album.html
You have to put it in an album first. Then go to this page and put it in one of the places where you can add backgrounds.
http://www.yorkietalk.com/forums/pro...p?do=customize
You can also add a picture to your profile page, by uploading a picture here:
http://www.yorkietalk.com/forums/pro...editprofilepic, but this will just show up as a profile picture, and not as your "background."