This is a simple mod that changes the main menu wallpaper. Image is 1920x1080 and is best used with 1920x1080 monitors or you'll end up with white borders.

Install instructions:

Mod manager recommended.

Download and activate with a mod manager.

I recommend using the mods "No Menu and Loading Screen Smoke" found at http://www.nexusmods.com/skyrim/mods/7901/ and "No Bethesda Logo In Menu" found at http://www.nexusmods.com/skyrim/mods/8023/?

Downlaod my other wallpaper, "Sangromancer Main Menu Replacer",  here: http://www.nexusmods.com/skyrim/mods/79687/?

Credit to hellstorm102 for the .nif file.