Performance analysis of MIPv4 and MIPv6 over WLAN

hi,
I'm doing my master's project on "Performance analysis of MIPv4 and MIPv6 over WLAN" with simulation in OPNET. i'm so worried about that i dont have any hands-on experience in OPNET and i really dont know how to set-up a network for evaluating the performace of MIPv4 and MIPv6 like ( throughput, latency and packet retransmission). it would be very greatfull, if any one provides me the solution . I'm using OPNET version 15. please help me out.