Forgot Administrator Password in Windows Vista?

Problem: Forgot administrator password in Windows Vista?
I must have messed something up because now I can’t sign the administrator account with the right password. I changed the administrator password last night. But I’m sure that I log on to the administrator account with what I changed to. It said that it is incorrect password.  And it said no drive when i try to rest it by clicking the Reset Password link under the password box. Can someone walk me through how to recover or reset the forgotten Windows administrator password? It’s a windows vista home premuim dell computer.
Things you need to understand before Windows password recovery:
1. Please make sure the Caps Lock is off as the Windows password is case-sensitive.
2. Please make user that you are trying the right user account if there are many users displayed on the Windows Vista logon screen.
3. If you want to reset Windows password by clicking the Reset Password link appearing after enter a wrong password, it’s required to create a password reset disk before the password is forgotten by using the Windows built-in tools.
Solution: Use Windows Password Unlocker
The best solution to getting rid of a lost Windows Vista password that I find is to use Windows Password Unlocker tool, on the condition that you neither have a password reset disk nor another accessible administrator account.  It enables you to create a bootable Windows password recovery disk with a blank CD/DVD or USB flash drive in seconds. When you forgot Vista password, you can insert the bootable disk in the locked computer and start it from the disk. Then you’ll access Windows Password Unlocker with all your user accounts listed. Select your target user account and reset its password.
It’s estimated the whole Windows password recovery will cost you no more than 5 minutes, irrespective of the length and complexity of your lost Windows password. If you want more details, there are image and video step-by-step user guide on its official website. No any loss or damage to your computer data or settings. And its recovery rate is 100%。
Please note that it’s required to install and run this Windows Password Unlocker tool in a computer that you can run as administrator. If you cannot log in your computer as administrator, you can find any third computer to download and run this utility.