My computer did not come with an Ethernet cable in the accessory kit. Was it supposed to have one?

No, an Ethernet cable is not included in the PowerBook G3 Series (Bronze keyboard) or PowerBook (FireWire) accessory kit..

If you are going to connect your computer to an Ethernet network you will need to purchase the appropriate cable. If you are planning to connect to a 100 base Ethernet network, is important that the cable be rated as a Category 5 (Cat 5) cable .