Abstract: Apparatus for configuring a computer system is adapted to allow configuration to occur on the system unit without removing the system unit from its packaging. By so preparing and operating the unit that it can function to a degree as a network client, it is possible to perform steps for configuring "in the package" that violate normal self test expectations. With this abnormal operating environment and operation the system is placed in condition to be removed from the packaging at the user's location with BIOS and program image customized for the user. This approach provides a freshly configured system and yet eliminates unpacking at a configuration center and then repacking for transfer to the user or the need for refresh configuration at the user site as the system unit is set up for normal use.