wallpaper for lubuntu 14.04
I just up graded from 12.04. With 12.04 I had a pic. I got off the internet and installed it as wallpaper. I now have that picture on my desktop but I can't figure out how to use it as wallpaper. How do I do that? By the way the pic. I'm talking about is from nasa earth science, they have some really cool stuff, if anyone is interested.