Open cash register from DOS

type "copy con: open.txt" and press ENTER
press ALT key and hold it
type "27" on your numeric keypad (Numeric Keypad not one above letters )
release ALT key
type "p07y" (small "p" zero seven and small "y"! without quotes)
type Ctrl-z and then Enter

To open the cash register
copy open.txt LPT1:

XP SP3 install - Access Denied Error

Windows Update keeps failing on SP3 update with "Access Denied" error. Searching online found this blog.

http://fastest963windows.blogspot.com/2008/05/before-installing-windows-xp-sp3-
access.html