RockXP can retrieve and change your XP key, save your activation file, etc.
Warning: RockXP is a tool that allows you to retrieve passwords. To do that, RockXP uses a third party tool called Pwdump2.exe, an opensource software (Sources are included in RockXp). This tool retrieves the HASH password of Windows. Unfortunately, some Antivirus detects this tool like a Virus. If you are uncomfortable with this, do not download or try this software.
RockXP allows you to: - To retrieve and change your XP Key - To retrieve all Microsoft Products keys - To save your XP activation file - To retrieve your lost XP system passwords - To retrieve your lost RAS (Remote Access Settings) passwords - And to generate new passwords