From TechRepublic:
Everyone has to search for a file now and then, either on a local system or on a shared network. Windows 2000 Pro provides a reasonably good search feature within the user interface, but sometimes it is easier to search from a command console.
To help you accomplish these command-line searches, you can turn to the Where.exe utility included with the Windows 2000 Resource Kit. Where.exe can locate files on the local file system or on the network. You can direct Where.exe to search only the target folder or perform a recursive search through subfolders.
I’ve never tried the utility, so I don’t know how it compares to the built-in search, but it sounds interesting.