Same her, please explain better what you want to achive. My suspicion is - given your own statement that you don't have networking experience - you are looking at this a bit backwards 
The devices most commonly runnig DHCP servers are routers that sit somewhat in the middle of everything and route IP packets to their approproate destination. These destinations are usually End-devices (for lack of a better name) like an Arduino. There are libraries the implement DHCP clients on an Arduino.