Originally Posted by jcnoble
Thanks for the information; it got me part way to a solution.
It is now my understanding that my power cable is also my data cable and to “unmount” means to unplug my USB/data cable from my computer.
I was able to move my jpg from my computer to the “download” folder on my phone. I now need help in knowing how to move the jpg from the “download” folder to whatever folder holds the wallpaper selections.
Can you see it in your gallery? If so you should be able to just press menu, (on the phone, not the one under the picture), then more, then "set as". If you don't see it in the gallery, look in your apps for the file manager and move it, I think to DCIM should work since you can use any picture in the gallery as a wallpaper.