JPCSP start .bat says Java not exist due Windows command issue

[gid15]

Could someone test if this script would better work?
I've tried to detect if the "reg" command is available.
Also, if the java command is not returning an error code of 0, a pause is added so that you can see any error message.

Code:

@echo off
set PATH=%PATH%;lib\;lib\windows-x86\

if NOT EXIST "%SystemRoot%\SysWOW64" goto JAVA32
set key=HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\JavaSoft\Java Runtime Environment
goto JAVA

:JAVA32
set key=HKEY_LOCAL_MACHINE\SOFTWARE\JavaSoft\Java Runtime Environment

:JAVA
set JAVA_CMD=java.exe

rem Checking if the "reg" command is available
reg /? >NUL
if ERRORLEVEL 1 goto RUN

set JAVA_VERSION=
set JAVA_HOME=
for /f "tokens=3* skip=2" %%a in ('reg query "%key%" /v CurrentVersion') do set JAVA_VERSION=%%a
for /f "tokens=2* skip=2" %%a in ('reg query "%key%\%JAVA_VERSION%" /v JavaHome') do set JAVA_HOME=%%b

set JAVA_CMD=%JAVA_HOME%\bin\java.exe
if not exist "%JAVA_CMD%" goto JAVAMISSING

:RUN
echo Running Jpcsp 32bit...
"%JAVA_CMD%" -Xmx1024m -Xss2m -XX:MaxPermSize=128m -XX:ReservedCodeCacheSize=64m -Djava.library.path=lib/windows-x86 -jar bin/jpcsp.jar %*
if ERRORLEVEL 1 goto PAUSE
goto END

:JAVAMISSING
echo The required version of Java has not been installed or isn't recognized.
echo Go to http://java.sun.com to install the 32bit Java JRE.

:PAUSE
pause

:END