To reset forgotten Windows vista password, there are several free methods:
1. With another admin account.
2. With Windows vista password reset disk.
3. From Safe Mode.
4. With CMD.
5. Using "lusrmgr.msc"
More dtails you can found on other sites, it is easy to find.
Anothe tip: Reset forgotten Windows vista password with Windows Password Recovery Tool.
1. Install this program on another computer and create a password recovery disk with USB
2. Insert the disk to your laptop and set your laptop to boot from it.
3. All user accounts will be loaded, then you can reset any user password.
If you want to read more details: http://www.windowspasswordsrecovery.com