>I need to assign a folder to a letter drive. As in:
>
>

>SUBST D: C:\DATA
>

>
>In DOS worlds there was AUTOEXEC.BAT file that could probably work for this command. Where would you recommend to put this command on an XP Pro machine? And it would be nice if the OS would run this command before it assigns letters to an EXTERNAL hard drive.
>
>Thank you in advance for any suggestions.

One place that's fairly easy to manage is

* For one user (e.g. yourself):
C:\Documents and Settings\< My User ID >\Start Menu\Programs\Startup\SomeBatchFile.CMD

* For all users:
C:\Documents and Settings\All Users\Start Menu\Programs\Startup\SomeBatchFile.CMD

I don't know if you can use this to assign a drive letter before the OS gives drive letters to removable drives.