After you upgrade a Windows XP-based computer to Windows Vista, you experience the following symptoms:

• One or more of the following Windows XP-related groups appear in the “Local Users and Groups” Groups folder:
  • HelpServicesGroup
  • Offer Remote Assistance Helpers
  • RS_Query
• One or more of the following Windows XP-related user accounts appear in the “Local Users and Groups” Users folder:
  • SUPPORT_388945a0
    Note: The 388945a0 part of this user account represents a combination of numbers and letters. This combination may differ on your computer.
  • HelpAssistant
  • WIIS_ComputerName

You expect only Windows Vista-related users and groups to remain on the computer after you upgrade to Windows Vista.