The supplied first step guide has the following descriptions.
Paragraph five of Windows XP Home Edition First Step Guide
- When you continue to use Windows XP after the elapse of 30 days, you must activate Windows XP to continue using it.
User need not re-activate the license of Windows XP Home Edition after recovering the pre-installed VAIO computer. However, there is a need for re-activation if Microsoft Office XP has to be re-installed.