[kenpodad]

Is there a way to put two different photos on the desktop as background without the photos being stretched out ?

[PopPicker]

You'll need to use some photo software to create 'one' image out of the two. To make sure it doesn't stretch you'll need to have the image the same ratio as the screen. Even if that means having a coloured border.

[Hughv]

You can keep it from stretching by using the "center" option.
Paint .Net can easily make a combined image like this.
http://www.getpaint.net/

[algee650]

Yes, selecting the center option for your wallpaper settings. Or you can just tile it and have multiple pics of the same image : )