Hive: HKEY_CURRENT_USER
Key: Control Panel\Desktop
Name: WallPaperOriginX
Type: REG_SZ
Value: Enter the desired starting value for the X axis
Hive: HKEY_CURRENT_USER
Key: Control Panel\Desktop
Name: WallPaperOriginY
Type: REG_SZ
Value: Enter the desired starting value for the Y axis