@echo off
SET SRC=\\test-pc01\foo
SET DEST=%TEMP%\%RANDOM%.TMP

rem Query for installation
reg query "HKCR\Software\Microsoft\Multimedia\Components\Installed\codec_wvc1dmo\Uninstall"> NUL 2>NUL
if errorlevel 1 goto do_install
goto end

:do_install
rem Make temporary directory and copy down files
mkdir "%DEST%"
xcopy "%SRC%" "%DEST%" /y

rem Change directory and drive to destination location (as setupapi has to be called with
rem current directory .\ specified on command line. Dumb, dumb, dumb...)
pushd %DEST%
%DEST:~0,2%

rem Call setupapi to perform installation
start /wait rundll32.exe setupapi,InstallHinfSection DefaultInstall.Nt 132 .\wvc1dmo.inf

rem Dumb thing doesn't seem to register itself
regsvr32 /s %SystemRoot%\System32\wvc1dmod.dll

popd

rem Remove temporary files
rmdir /s /q "%DEST%"

:end