how to remove reset mac osx password (no install cd required )

This is FYI note for me so as not to forget,

My friend R forgot ID/PW to login mac OS X 10.3, She lost install CD as well, so here is the solution for her to reset the password.

Youtube : Access here

Summary :

1. Access to terminal
2. mount -uw /
3. rm /var/db/.AppleSetupDone
4. shutdown -h now　
5. After OS shutdown, boot OS again
6. Create new user account/Password

Here is the other step she gave me, but it seems there is no sh /etc/rc available. You may look at the following directory first, and if there is no file, please try above steps.

1. Hold Apple+S when booting to enter single user mode
2. #sh /etc/rc
3. #passwd yourusername
4. #reboot