@echo off

:: Get the plot file name and location from the command line.
set infile=%1

:: Change the .plt (Change to .ps if you are using that extension) to .pdf for the output.
set outfile=%infile:.plt=.pdf%

:: Delete any pdf files that exist with the same name
if exist %outfile% del %outfile%

:: Change to the directory where Ghostscript is installed
c:
cd \ptc\gs5.50

call ps2pdf %infile% %outfile%

:: The following line should point to the destination of your pdf file
c:
cd c:\

:: Delete the original plot file.
del %infile%