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Microsoft Resource Kits - Windows 2000 Resource Kit

Runext.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.

Runext.exe - Run Extension
This shell extension adds a Run command to the context menu for files that are right-clicked in Windows Explorer. Selecting Run from the menu opens the Run dialog box with the file's path name set in the Open field. The cursor is set immediately after the file name to allow the quick entry of parameters for that application.