A batch file is a list of commands for a console. It doesn't give you any more access to the computer, so I don't think it will work. =X if it has a Admin account, and you can. You should be able to shove some Windows account cracking tools into a data disk, then set your computers boots through the CD. Then when you start your computer..It will crack the passwords for you. I don't know where the software is. You could use a CD boot with err, linux.