ok here's the script:
just put the batch file in the USB drive and it will get the Drive letter of the USB drive:
@echo off
title GetDrive Letter
cd > temp.tmp
set /p return=<temp.tmp
set parentdrive=%return:~0,1%
del temp.tmp
echo The Drive letter of this USB Drive is: %parentdrive%
pause
Hope this Helps
,Nick(macdad-)