Using the Classic Search in Explorer

If you prefer to use the classic search style in Explorer,
Start Regedit
Go to HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\CabinetState
Add a String Key called Use Search Asst
Give it a value of 'no'

Changing the Registered Owner
Start Regedit
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion
From there you can edit the name in the Registered Owner key