Need to make path to Libs folder&Path to java

[rokrvaibhav]

Sorry, About asking for help here without helping other. I will help others, But I get some error in posting to SF, If this works, Imma gonna be posting many stuff.
I have made a batch file to run a script from a jar file.
which is

Code:

java -jar  Data\my script launcher.jar Data\my script

But to run the script the script
- need to have
1.) path to Libs folder and
2.) path-to-java\jre6\bin in system path (%PATH%)

I am super noob in Batch file. Please tell me how do I set these path, to run the script properly.
I know the path command is

Code:

PATH=%PATH%;C:\Program Files\Java\jre6\bin

Also I have downloaded A batch file which automatically finds the path to java. But the thing Is I can't get it work

Code:

@ECHO OFF

ECHO Looking for JDK

SET KEY_NAME=HKLM\SOFTWARE\JavaSoft\Java Development Kit
FOR /F "tokens=3" %%A IN ('REG QUERY "%KEY_NAME%" /v CurrentVersion 2^>NUL') DO SET jdkv=%%A
SET jdk=

IF DEFINED jdkv (
    FOR /F "skip=2 tokens=2*" %%A IN ('REG QUERY "%KEY_NAME%\%jdkv%" /v JavaHome 2^>NUL') DO SET jdk=%%B
) ELSE (
    FOR /F "tokens=*" %%G IN ('DIR /B "%ProgramFiles%\Java\jdk*"') DO SET jdk=%%G
)

SET jdk=%jdk%\bin
SET javac="%jdk%\javac.exe"

IF NOT EXIST %javac% (
    javac -version 2>NUL
    IF "%ERRORLEVEL%" NEQ "0" GOTO :notfound
) ELSE (
    GOTO :setpath
)
GOTO :eof

:notfound
ECHO JDK is not installed, please download and install it from:
ECHO http://java.sun.com/javase/downloads
ECHO.

:setpath
SET PATH=%jdk%;%PATH%
GOTO :eof
java -jar  Data\my script launcher.jar Data\my script

Please help me to find a way so i can run the script?
Thank you.
[HF Username:- rokrvaibhav]