Well I only have access to my main machine atm, but the following should work:
Save this as "Launch_CLPHP.cmd" on your USB drive. And use it to launch/start CLPHP ...
Code:
CALL:GET_PATH "%CD%"
SET CLPHP=%LocalDrive%\Programs\Codelobster Software\CodelobsterPHPEdition
CD "%CLPHP%"
COPY msxml4.dll "%Windir%\System32"
Regsvr32.exe msxml4.dll
START "" ClPhpEd.exe
GOTO:EOF
:GET_PATH
SET LocalDrive=%~d1
Granted this adds msxml4.dll to the target machine. If that's an issue you could use something like AutoHotKey to launch CLPHP similarly do the Copy + Regsvr32.exe AND Delete + Unregister when CLPHP is closed.