How to get in a pc when he had password

Here i have a software you can get in a pc you want without password!!!!!Ok when you have downloaded it you will get a .iso fileburn it on a cd the cd must be bootable.1. Boot with CD.2.When Windows is fully booted go to the console mode.3. Type 'kon-usr' as login, if it works you should be now in the system .4. !Remember! to restore the system when you are leaving, you can do this by typing '