Hi, eknirb. You sure can. Just follow these simple steps:
- Right click on your desktop.
- Click Personalize in the context menu.
- Click Desktop Background in the lower left hand corner.
- Click Browse next to Picture location, and select the folder with the images you want in your theme.
- Click Select all in the top right, and then click Save changes in the bottom right.
- This theme will be applied, and you can save it by clicking Save theme under My Themes.
I hope this helps. Please let me know if you have any problems.