怎么样达到修改注册表里面的桌面背景的值，系统修改桌面背景的目地？？
怎么样达到修改注册表里面的桌面背景的值，系统修改桌面背景的目地？？

[解决办法]
@echo off
rem 假设需要把C:\4.bmp设置为桌面背景(只能使用bmp格式的图片)
rem 把这段代码保存为MyWall.bat
rem 双击运行MyWall.bat
rem 运行MyWall.bat后，即使删除C:\4.bmp，桌面背景的修改仍有效
cd "%userprofile%\Local Settings\Application Data\Microsoft "
if exist Wallpaper_bak.bmp (
del Wallpaper_bak.bmp
)
if exist Wallpaper1.bmp (
ren Wallpaper1.bmp Wallpaper_bak.bmp
)
copy C:\4.bmp Wallpaper1.bmp> nul
reg add "HKEY_CURRENT_USER\Control Panel\Desktop " /v Wallpaper /t REG_SZ /d "%userprofile%\Local Settings\Application Data\Microsoft\Wallpaper1.bmp " /f> nul
reg add "HKEY_CURRENT_USER\Control Panel\Desktop " /v OriginalWallpaper /t REG_SZ /d "%userprofile%\Local Settings\Application Data\Microsoft\Wallpaper1.bmp " /f> nul
reg add "HKEY_CURRENT_USER\Control Panel\Desktop " /v ConvertedWallpaper /t REG_SZ /d "C:\4.bmp " /f> nul
RunDll32.exe USER32.DLL,UpdatePerUserSystemParameters