This is very useful when you need to change your system date before open up some of your application that already expired.

@Echo Off
REM ** Must be run as System Admin Priviledge

REM Store systems current time into BEFOREDATE var as mm-dd-yy
SET BEFOREDATE=%date:~4,2%-%date:~7,2%-%date:~10,4%

REM Set the below date to date you wish to roll your system date back to
DATE 04-11-11

SET now=%date%
echo Date change to - %now%

REM First param of START command needs empty double quotes
REM Second param of Start command should be absolute path to application
REM IE "C:\Program Files\directory\filename.exe"

START "" "ThisIsYourProgramName"

REM Cause a delay to allow application to load

PING -n 10 127.0.0.1 > NUL 2>&1

REM Set system date back to current date
DATE %BEFOREDATE%

SET now=%date%
echo Date Now - %now%

 

Till then..adioss