Batch file - Please look

::===================================================
:: Automated Printer Driver Change
::
:: This batch file was written by NetCMH
::
:: Version 1.0 for Windows XP
::
:: Script to:
:: 1. Enumerate the printers on the computer
:: 2. List the default printer
:: 3. Delete and re-add printers with UPD 5.0 driver
:: 4. Re-establish the default printer
::=================================================== 
@echo off
setLocal EnableDelayedExpansion 
ver | find "2003" > nul
if %ERRORLEVEL% == 0 goto ver_2003 
ver | find "XP" > nul
if %ERRORLEVEL% == 0 goto ver_xp 
ver | find "2000" > nul
if %ERRORLEVEL% == 0 goto ver_2000 
ver | find "NT" > nul
if %ERRORLEVEL% == 0 goto ver_nt 
echo Machine undetermined.
goto exit 
:ver_2003
echo Windows 2003
call :create_temp
call :list_printers
call :list_default_printer
call :process_files
rem call :rename_old_files
call :change_drivers
call :cleanup
goto :eof 
:ver_xp
echo Windows XP
call :create_temp
call :list_printers
call :list_default_printer
call :process_files
rem call :rename_old_files
call :change_drivers
call :cleanup
goto :eof 
:ver_2000
echo Windows 2000: Not supported in this version
goto :eof 
:ver_nt
echo Windows NT: Not supported in this version
goto :eof 
:create_temp
if exist "C:\temp\" (
echo. Folder Exists
) else (
mkdir c:\temp\
)
exit /b 
:list_printers
echo Listing printers & ports to text files : c:\temp\prns.txt & c:\temp\prts.txt
cscript //nologo %SYSTEMROOT%\SYSTEM32\prnmngr.vbs -l | findstr /c:"Printer name" | findstr /v "Microsoft" >>  
c:\temp\prns.txt
cscript //nologo %SYSTEMROOT%\SYSTEM32\prnmngr.vbs -l | findstr /c:"Port name" | findstr /v "Microsoft" >> c:\temp\prts.txt
exit /b 
:list_default_printer
echo Listing default printer to text file : c:\temp\defprn.txt
cscript //nologo %SYSTEMROOT%\SYSTEM32\prnmngr.vbs -g >> c:\temp\defprn.txt
exit /b 
:process_files
echo Processing files to extract variables
FOR /F "tokens=1 delims=" %%A in ('type c:\temp\prns.txt') do SET myVar1=%%A
set myvar1=%myvar1:Printer name =%
FOR /F "tokens=1 delims=" %%A in ('type c:\temp\prts.txt') do SET myVar2=%%A
set myvar2=%myvar2:Port name =%
FOR /F "tokens=1 delims=" %%A in ('type c:\temp\defprn.txt') do SET myVar3=%%A
set myvar3=%myvar3:The default printer is =%
exit /b 
:rename_old_files
ren C:\WINDOWS\system32\spool\drivers\w32x86\3\HPBMINI.dll C:\WINDOWS\system32\spool\drivers\w32x86\3\OLD_HPBMINI.dll
ren C:\WINDOWS\system32\spool\drivers\w32x86\3\HPCDMC32.dll C:\WINDOWS\system32\spool\drivers\w32x86\3\OLD_HPCDMC32.dll
exit /b 
:change_drivers
echo Changing Drivers:
for /f "tokens=* delims= " %%a in (c:\temp\prns.txt) do (
cd %SystemRoot%\system32
echo Deleting exisiting UPD 5.0 driver if exists
Cscript Prndrvr.vbs -d -m "HP Universal Printing PCL 5 (v5.0)" -v 3 -e "Windows NT x86"
echo Installing fresh UPD 5.0 driver from server
rundll32 printui.dll,PrintUIEntry /ia /m "HP Universal Printing PCL 5 (v5.0)" /f "\\server01\upd5pcl5\hpcu091b.inf" /u
echo Deleting printers
Cscript Prnmngr.vbs -d -p "%myvar1%"
echo Adding printers
cscript prnmngr.vbs -ac -p "%myvar1%" -m "HP Universal Printing PCL 5 (v5.0)" -r "%myvar2%"
echo Re-instating the default printer
Cscript Prnmngr.vbs -t -p "%myvar3%"
if errorlevel 1 (echo %%a >> c:\temp\failed.txt
) else (
echo Success
)
) 
:cleanup
echo Cleaning up
echo y|del c:\temp\prns.txt
echo y|del c:\temp\prts.txt
echo y|del c:\temp\defprn.txt 
:eof
exit