Make sure you are beside the phone before beginning
To activate Windows XP Professional Click Start, All Programs,
Accessories, System Tools, and then click Activate Windows. The "Let's
activate Windows screen will appear. Click on "Yes, I want to telephone a
customer service rep to activate Windows ". Once selected click "Next" to continue.
Windows will now create an installation ID...
.Next a menu will appear, select your country from the drop down
A selection of numbers for Microsoft will appear, usually one
will be a Toll free number the other you have to pay for. Dial the number of
An automated voice will answer the phone, at step 3 an
installation ID will appear, nine blocks of six digits, the automated voice on
the phone will ask you for these a block at a time, input them using your dial
pad on the phone.
The voice will now give you a confirmation ID once it has the
complete installation ID, write this down on a piece of paper, you can use it
again if you ever reinstall Windows. Then input it into blocks A to G, once done
After a few moments, if all is successful then the "Thank
You!" screen will appear, click "OK" to finish, Windows is now
registered and you shouldn't have to do it again unless you have a major
hardware change, i.e. motherboard.