First you need to upload the background you want to use
to a server.
Here is my free image host. It gives you a direct link
code to your image after you upload it.
After you upload your picture, right click on it and
choose properties. Then you can copy the address of the
picture.... ( or copy the direct link )
When you log on to your MySpace or IMVU account, click
on Edit Profile.
In the About Me area Paste in this code
Edit the code that is shown in purple here to your image
that you uploaded.