Wallpapers* (only those used by the .theme), unless it's a .themepack
Icon set resource DLLs, in the future when icon set auto-creation is introduced, on first ISO uses
Branding, on first SKU uses
Lock Screen/Splash Screen resource DLLs, on first ISO uses**
OEM LoginBG (Windows 7-specific)
*For each wallpaper, if the wallpaper isn't pointing to a location in the Windows folder, try to convert the path to where it would be on the installation's in-this-OS location, to get its location (if that fails, force user to provide substitute file)
**Excludes Windows Vista Starter - in Windows Vista Starter, ensure the login screen background is uniquely teal instead of a full login screen image
*For each wallpaper, if the wallpaper isn't pointing to a location in the Windows folder, try to convert the path to where it would be on the installation's in-this-OS location, to get its location (if that fails, force user to provide substitute file)
**Excludes Windows Vista Starter - in Windows Vista Starter, ensure the login screen background is uniquely teal instead of a full login screen image