China DOS Union

There is now an operating system, WindowsXP Pro CN AI Edition V2, a super-integrated SP2 no-activation edition. It not only integrates SP2, but also many application programs. Very nice.
It uses a "batch file." Below is its batch file:

CLS
@echo off
ECHO INSTALLING PROGRAMS,PLEASE WAIT,DON'T press any key.
ECHO.
ECHO Installing Metapad 3.5...
REN %systemdrive%\WINDOWS\System32\dllcache\notepad.exe notepad.old
COPY "%systemdrive%\Install\Applications\metapad\notepad.exe" "%systemdrive%\WINDOWS\System32\dllcache\"
REN %systemdrive%\WINDOWS\System32\notepad.exe notepad.old
COPY "%systemdrive%\Install\Applications\metapad\notepad.exe" "%systemdrive%\WINDOWS\System32\"
REN %systemdrive%\WINDOWS\notepad.exe notepad.old
COPY "%systemdrive%\Install\Applications\metapad\notepad.exe" "%systemdrive%\WINDOWS\"
ECHO.
ECHO Installing DirectX 9.0b
ECHO Please wait...
start /wait %systemdrive%\install\Applications\DirectX9\dxsetup.exe /opk
ECHO.
xcopy /s /y "%systemdrive%\Install\Applications\MyIE2" "%systemdrive%\Program Files\MyIE2\"
copy /y "%systemdrive%\Install\Applications\MyIE2.lnk" "%systemdrive%\Documents and Settings\All Users\桌面\"
xcopy /s /y "%systemdrive%\Install\theme\PixOS" "%WinDir%\Resources\Themes\PixOS\"
COPY "%systemdrive%\Install\theme\PixOS.theme" "%WinDir%\Resources\Themes\"
ECHO.
ECHO Installing MSN Messenger 6.0.0602 Final
ECHO Please wait...
start /wait %systemdrive%\install\Applications\MSN\MsnMsgs.msi /QB
ECHO.
ECHO Installing WinRAR 3.20
ECHO Please wait...
start /wait %systemdrive%\install\Applications\WinRAR\WinRAR32.exe /s
ECHO.
pskill notepad.exe
ECHO.
ECHO Updating Microsoft JavaVM to 3810
ECHO Please wait...
start /wait %systemdrive%\install\Java\MSJavAVMBuild3810Update.exe /Q:A /R:N
ECHO.
ECHO Installing Windows Messenger 4.7
ECHO Please wait...
start /wait %systemdrive%\install\Applications\WM\MMSSETUP.EXE /q
ECHO.
ECHO Installing Flashget 1.4
ECHO Please wait...
start /wait %systemdrive%\install\Applications\flashget\fg140.exe /S
ECHO.
PSKILL MSMSGS.EXE
ECHO.
ECHO Registering Flashget 1.4...
REGEDIT /S %systemdrive%\install\Applications\flashget\register.reg
ECHO.
ECHO Installing QQ2003Mz_Final
ECHO Please wait...
start /wait %systemdrive%\install\Applications\QQ2003muzi.exe /VERYSILENT
ECHO.
ECHO Installing QuickTime plugin
ECHO Please wait...
start /wait %systemdrive%\install\Applications\quicktimealt111.exe /verysilent
ECHO.
ECHO Installing Klite
ECHO Please wait...
start /wait %systemdrive%\install\Applications\Klite\klcodec205f.exe /verysilent
ECHO.
ECHO Installing Cmd here Powertoy
ECHO Please wait...
start /wait %systemdrive%\install\Applications\CmdHerePowertoySetup.exe /s /v /qn
ECHO.
ECHO Installing Daemon tools333
ECHO Please wait...
start /wait %systemdrive%\install\applications\daemon333.msi /qb
ECHO.
ECHO Installing ac3filter4...
start /wait %systemdrive%\install\Applications\ac3filter4\registerfilters-win2000.cmd
ECHO.
ECHO Copying patched UXTheme.dll...
REN %systemroot%\System32\dllcache\uxtheme.dll uxtheme.old
COPY "%systemdrive%\Install\Applications\uxtheme\uxtheme.dll" "%systemroot%\System32\dllcache\"
REN %systemroot%\System32\uxtheme.dll uxtheme.old
COPY "%systemdrive%\Install\Applications\uxtheme\uxtheme.dll" "%systemroot%\System32\"
ECHO.
ECHO Installing Winbt
ECHO Please wait...
start %systemdrive%\install\Applications\winbt.exe /S
ECHO.
ECHO Installing winamp 2.95 plus
ECHO Please wait...
xcopy /y "%systemdrive%\Install\Applications\WINAMP.lnk" "%systemdrive%\Documents and Settings\All Users\桌面\"
start %systemdrive%\install\Applications\winamp.exe /S
ECHO.
EXIT

My question is: I want to add new software into it as well, for example "NeRo6300" (CD burning software). How should this "batch file" be written? Hoping an MS-DOS expert can give me some guidance!

Aren't its installer and desktop shortcut both already written in there?