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Microsoft Resource Kits - Windows 2000 Resource Kit

Associate.exe  (Windows 2000 Resource Kit)

The Windows 2000 Resource Kits help IT professionals deploy, manage, and support Windows 2000 operating systems.
There are a number of Windows 2000 Resource Kit software tools available for free download from Microsoft. These tools are listed below, and can help you streamline administrative tasks such as managing Active Directory™, administering security features, working with Group Policy and Terminal Services, automating application deployment, and other important jobs.

This command-line tool enables you to register or unregister a file name extension with the registry. "File extension, executable program" associations enable the Windows 2000 shell to launch the correct executable program when a file with the associated file name extension is opened from the command prompt, from Windows Explorer, or from File Manager.