1) Check that the choosen wallpaper size match the screensize setting of Your PC. (To check Your sceensize setting, position the cursor somewhere at the desktop and right click. A menu appears and select "Properties" from that meny. A window "Properties for the Screen" appears and select the tab "Settings". In the field "Desktop screensize" You can read the current screensize setting. You can also change Your screensize setting by this lever)
2) Wait for the picture below to be completely downloaded.
3) Position Your cursor somewhere on the picture below and press right buttom. A menu appears.
4a) The easiest way is to select "set as wallpaper" ("Använd som skrivbordsunderlägg") and You are done.
4b) If You like to store the picture permanently on Your computer, select "Save picture as ..." from the menu. A "Save picture" window appear. In the "Save in" field select the "WINDOWS" map and in the "File format" field select the "bitmap (*.bmp)" type.  Click the save buttom and the picture is permanently saved.
To insert the picture as wallpaper, position the cursor somewhere at the desktop and right click. A menu appears and select "Properties" from that meny. A window "Properties for the Screen" appears and select the tab "Wallpaper" (if not already selected). In the list field You can now see selectable wallpaper names. Scroll the list to find this picture (by the name used earlier during save as) and select it by clicking on it. The picture appears in the small screen painted in the menu. Click OK on this window to delect the picture as wallpaper.
5) Enjoy Your wallpaper :-)