To use wallpapers on your profile page, you have to upload them to an album and mark that album "profile." This link tells more about albums,
How to Make an Album, and this link tells about setting up your profile page:
Decorating your Profile page, post 45 in that thread shows exactly where you can use the wallpaper, it's wherever you see the words, "background image."
Here's a picture from that thread:
Where to paste wallpaper. See the little "folded envelope" in the picture? If an album has been marked "profile" instead of public or private, you will see the envelope, and when you press on the envelope it will show you the wallpaper in your album, and you can just pick the paper you want for various places. You may have several different profile albums, and it will list all your albums.
If you find a background paper you like, just "right click" it and choose "Save picture as." You don't need a big picture because Yorkietalk "tiles" the picture. After you saved the picture on your computer, upload it to an album you created on Yorkietalk.
Here's a few websites where you can find background paper:
Addglitter Animated Backgrounds Bigoo CoolSpaceTricks Dazzle Junction Glitter Graphics Google Backgrounds Graphic Arcade Hotmonkee Moo Backgrounds MySpace Graphics / MySpace Backgrounds Photobucket Piczo Wonder Backgrounds
These sites have glitter only, but lots of colors/choices.
Addglitter Glitter Only Glitter Classics More Glitter
You can also just google a theme, or color you have in mind. To put a U-Tube video on you page, see this thread:
How to put YouTube on your Profile Page!