Windows 7 Having trouble with desktop background on different user accounts.

So my girlfriend and I both have different user accounts on our computer. The trouble I'm having is I like a nice picture of my car as my background and she likes the stock images of flowers. When I set a picture of my car it shows up on both my desktop and hers and the same with her setting her flower pictures to her desktop. They show up on mine. I have looked every where before coming here b/c I didn't want to join another forum just to ask this question. If anyone could help me my girlfriend and I would both appreciate it very much. Thanks in advance.

This website is not affiliated, owned, or endorsed by Microsoft Corporation. It is a member of the Microsoft Partner Program.