HI,
This an be done very easily and quickly if Excel macro is developed instead of Batch script.
Macro will run from button and ask you to select the files with file dialog.
Macro will then convert all of the files without any interaction.
If you still like batch file, then I can develop that [login to view URL] it won't have any advantage over Excel macro, because at the end it will also automate Excel.
If you like the solution, without the Excel automation and that can be run without Excel installed, then I have solution for that too.
Thanks