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Microsoft Resource Kits - Windows 2000 Resource Kit

Defptr.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.

Defptr.exe - Default Printer
Using this tool, you can easily change your default printer, switching between available network or local printers. Network printers tend to get busy at erratic intervals, which can require periodically switching the default to avoid "traffic jams." Default Printer allows you to toggle between available printers - local and network. The tool can be used for other purposes as well: for example, to switch printers while working in applications that support only the default printer