How to make an icon your computer's wallpaper

Christ Pantocrator

Christ of SinaiThe Holy NapkinThe Theotokos of VladimirThe Theotokos of the SignSt. John the ForerunnerSt. Michael the ArchangelSt. Herman of Alaska(if i get it to you, St Nicholas the Wonderworker of Myra in Lycia)The Three Holy HierarchsThe Synaxis of Saints of North AmericaThe Nativity of Our LordThe Ressurection of Our LordPentecostThe ApocalypseThe Ladder of Divine Ascent