They are located on the Windows Installation CD, Support folder, Tools subfolder.
[3] For instance, WinDiff is a GUI tool for comparing files and folders.
[4][5] NetDiag is a CLI tool for diagnosing network problems.
[6] This tool is command-line version of the Network Troubleshooter that can be found in Windows Help and Support Center.
Although no x64 Resource Kit tools have been produced by Microsoft, some support tools are available in native x64 versions on the Windows XP Professional x64 and Windows Server 2003 x64 Editions CDs.