Here is another batch script that let's you drop one or multiple files onto an unpack.bat file in windows 7, not tested on other platforms.
Then they will be placed in E:\ as for this script, you can change that path to fit your needs...
Code:
@ECHO OFF
ECHO mmcl unpacker
:Loop
IF "%~1"=="" GOTO Endloop
ECHO Unpacking: %~n1
D:\Downloads\mmcl.exe --unpack "%~f1" "e:\%~n1%~x1"
SHIFT
GOTO Loop
:Endloop
PAUSE