Late as ever.
For those without Excel (a brilliant piece of lateral thinking BTW).
First ensure that the new file
blank.bmp has been copied to the existing
oldpix data folder & then create the following batch file (
my_name.bat) in a convenient location (e.g. root), modifying folder/file names and paths as necessary.
MD c:\newpix
CD c:\oldpix
MOVE blank.bmp c:\newpix
DIR /B > c:\newpix\filelist.txt
CD c:\newpix
FOR /f %%n IN (filelist.txt) DO COPY c:\newpix\blank.bmp c:\newpix\%%n
I think this will work but no promises as I only used a set of 30 files to test it. Note, the FOR DO statement is all one line.