i think he means v1.1 of the scripts... well, but i am not a native english-speaker. 
DOH!
If you are using Windows 2000 or Windows XP and the OS is installed in a reasonably "normal" manner, then there's no reason why the script won't work, unless your pathing variables aren't standard.
You could try editing the script and changing "REGEDIT /E" to "C:\WINDOWS\REGEDIT /E", on the proviso that your Windows OS is installed on your C: drive.
Revised script with explicit pathing is below.
**************************************************
[ at ] echo off
cls
echo *****************************
echo The settings are backed up to %SYSTEMDRIVE%\CPFBackup\CPFRUles.REG
echo Merge the "CPFrules.reg" file back, to restore settings
echo *****************************
echo To start press enter. To quit press the "x" button on this window
pause >nul:
cls
if not exist "%SYSTEMDRIVE%\CPFBackup" goto :new
goto :archive
:archive
echo Clearing oldest backup - please wait
del %SYSTEMDRIVE%\CPFBackup\Prior\CPFRUles.REG >nul:
echo Storing previous backup - please wait ...
copy %SYSTEMDRIVE%\CPFBackup\CPFRUles.REG %SYSTEMDRIVE%\CPFBackup\Prior\CPFRUles.REG
echo Archiving current rule set - please wait ...
REGEDIT /E %SYSTEMDRIVE%\CPFBackup\CPFRUles.REG "HKEY_LOCAL_MACHINE\SYSTEM\Software\Comodo\Personal Firewall"
goto :end
:new
cls
echo.
echo Creating folders - please wait ...
echo.
md %SYSTEMDRIVE%\CPFBackup
md %SYSTEMDRIVE%\CPFBackup\Prior
echo Archiving registry keys - please wait ...
REGEDIT /E %SYSTEMDRIVE%\CPFBackup\CPFRUles.REG "HKEY_LOCAL_MACHINE\SYSTEM\Software\Comodo\Personal Firewall"
copy %SYSTEMDRIVE%\CPFBackup\CPFRUles.REG %SYSTEMDRIVE%\CPFBackup\Prior\CPFRUles.REG >nul:
goto :end
:end
echo DONE!!!
echo Press any key to end
pause >nul:
This is the Script for "CPFBackup.zip" (Version 1.2) it uses %ALLUSERSPROFILE% IE. C:\Documents and settings\Allusers\
Code:
[ at ] echo off
cls
echo *****************************
echo The settings are backed up to %ALLUSERSPROFILE%\CPFBackup\CPFRUles.REG
echo Merge the "CPFrules.reg" file back, to restore settings
echo.
echo *** THIS IS A PRIVATE REVISION FOR A SINGLE INSTANCE BUG FIX - EB ***
echo.
echo *****************************
echo To start press enter. To quit press the "x" button on this window
pause >nul:
cls
if not exist "%ALLUSERSPROFILE%\CPFBackup" goto :new
goto :archive
:archive
echo Clearing oldest backup - please wait
del %ALLUSERSPROFILE%\CPFBackup\Prior\CPFRUles.REG >nul:
echo Storing previous backup - please wait ...
copy %ALLUSERSPROFILE%\CPFBackup\CPFRUles.REG %ALLUSERSPROFILE%\CPFBackup\Prior\CPFRUles.REG
echo Archiving current rule set - please wait ...
C:\WINDOWS\REGEDIT.EXE /E %ALLUSERSPROFILE%\CPFBackup\CPFRUles.REG "HKEY_LOCAL_MACHINE\SYSTEM\Software\Comodo\Personal Firewall"
goto :end
:new
cls
echo.
echo Creating folders - please wait ...
echo.
md %ALLUSERSPROFILE%\CPFBackup
md %ALLUSERSPROFILE%\CPFBackup\Prior
echo Archiving registry keys - please wait ...
C:\WINDOWS\REGEDIT.EXE /E %ALLUSERSPROFILE%\CPFBackup\CPFRUles.REG "HKEY_LOCAL_MACHINE\SYSTEM\Software\Comodo\Personal Firewall"
copy %ALLUSERSPROFILE%\CPFBackup\CPFRUles.REG %ALLUSERSPROFILE%\CPFBackup\Prior\CPFRUles.REG >nul:
goto :end
:end
echo DONE!!!
echo Press any key to end
pause >nul:
**************************************************
If this doesn't work, do a Windows search for REGAEDIT.EXE and let us know where it is on your system.
Hope this helps,
Ewen :-)