i am having a similar problem only i do not have acces to other accounts, will this tool work for me? or is ther an easier way to fix this eg safemode etc. if so how would i get into safe mode?
At the first beep on boot, press F8 a few times and you'll boot to a plain screen menu. Select SAFE MODE and log in as Administrator. There should be no password unless you've consciously changed it or a Trojan has hijacked the registry entry.
With regards to Locksmith.... must it be installed on the machine with the lost password? Will you need to be logged on as another user and run the Locksmith interface, which allows you to select the broken account and reset the password? I'm not familiar with the Locksmith software....i'm familair with L0phtCrack application.