While I was doing some search on google, I found a nice tutorial for Windows Vista User. So I have decided to share it with you.

What you need!

   1. Activation Backup & Restore Program (2.2mb)
   2. Windows Upgrade Anytime DVD or retail vista DVD
   3. Recovery DVD(s) for your computer
   4. USB Flash drive, external hard drive, or second internal hard drive
   5. Device Drivers for your computer
   6. The best place to find the most up to date drivers is the support or download area of your computer manufacturer's website. You will need drivers for your display, network card, wireless card, touchpad or mouse, chipset, modem, card reader, etc.

** Do NOT proceed unless you have recovery disk(s) and any data you want to keep backed up! **

Instructions

   1. Download the Activation Backup and Restore program above.
   2. Open the file and copy the ABR folder to your USB flash drive, external drive, or second internal hard drive.
   3. Double click activation_backup.exe. This will open a cmd window and extract the OEM Vista key. If all goes OK you will see two new files in the ABR folder.
          * backup-cert.xrm-ms: Backed up activation
          * backup-key.txt: Backed-up product key
   4. Insert the Vista Anytime Upgrade DVD.
   5. Reboot your computer. Your computer should boot to CD/DVD. If not change the option in your BIOS
   6. Choose your language, Time/Currency, and country. Click Next.

Read Full tutorial here>>>www.davescomputertips.com