A small DHCP server, requiring no set-up beyond entering IP adresses and network mask. Runs nicely from a USB memory device, and no installation required.

This is not quite correct as the executable needs it’s COM classes registered with the system and it is achieved by starting it from command line “DhcpServer.exe /regserver” or “DhcpServer.exe /service” to bring the utility to service mode (make no sense for running from USB flash though).

Still for a basic functionality, starting unregistered is quite sufficient since the executable will anyway put implemented classes available for the process through CoRegisterClassObject API (if anyone cares for such a techy thing).