There’s also an included DisableFolderSearchMenu.reg file to put things back to the SP1 default.Download ReEnableFolderSearchMenu Registry Hack
Restore the "Search..." Item to the Folder Context Menu in Windows Vista SP1
One of the unwelcome changes that Microsoft introduced in Service Pack 1 was the removal of some of the easy ways to get to the Search screen: the start menu button and folder context menu item. Thankfully we can easily add the "Search..." item back to the context menu with a simple registry tweak.