There's photos of the Stallion and Grand Master on this site.
Find the photos you like.
Make a new file on your computer where you want to save them to, name it (example) Rod Photos or whatever.
Click the right mouse button on the photo you want to save, find the file you made and save it to the new file.
Go now to the file where you saved the photo(s) and right click on a photo.
Dialog box should appear and in the box there should be ' Save to Desktop Background' or something to that nature. Click on Save to Desktop.
The photo should automatically appear on your desktop.
Rearrange your icons on your desktop to fit the photo and right click mouse again and click 'Refresh'. This will lock the icons in that position.