I would like to search a txt file and replace string with another! need help!  
input is attached file!

STR=PPRINT TLAXIS  AX -0.7477942     AY 0.0140900     AZ 0.6637812

echo on
setlocal enabledelayedexpansion
set txtfile=%LOC%\%FILE%.vec
set newfile=%LOC%\%FILE%.apt
if exist "%newfile%" del /f /q "%newfile%"
echo. * * * Processing Supplied Vector! * * *
echo.
   set search=Search_String=%SWAP%
   set replace=Replace_With=%STR%

echo. * * * Processing Please WAIT! * * *
   for /f "tokens=*" %%a in (%txtfile%) do (
        set newline=%%a
              call set newline=%%newline:%search%=%replace%%%
              call echo %%newline%% >>%newfile%
)
echo.
echo. * * * Completed * * *
:forend
:more %newfile%
echo.

:eof


[recovering disk space - old ATTACHMENT deleted by admin]what is %SWAP%? instead of SHOWING the code, why don't you SHOW some SAMPLE input, show what you want to replace, and show your final output?sorry this set was missing from example!

SET SWAP=PPRINT  Project number :

replace  "PPRINT  Project number :"  with

                "PPRINT TLAXIS  AX -0.7477942     AY 0.0140900     AZ 0.6637812"        Any Ideas?  THANKS in Advance for enybodies Help!    Code: [Select]echo off

set infilename=5axis_example.aptsource
set outfilename=Whatever.ext

set LineToReplace=PPRINT  Project number :
set ReplacementLine=PPRINT TLAXIS  AX -0.7477942     AY 0.0140900     AZ 0.6637812

if exist "%outfilename%" del "%outfilename%"

for /f "delims=" %%A in (%infilename%) do (
if "%%A"=="%LineToReplace%" (
echo %ReplacementLine%>>"%outfilename%"
) else (
echo %%A>>"%outfilename%"
)
)

echo Script finished
echo.
pause
THANK's Salmon Trout!   Works GREAT!