GNS3 topology

Hello, I need a topology built in GNS3. This topology will be comprised of 3 office branches. Each branch will have a computer host running wireshark, a router and a Cisco ASA firewall. Each branch will be on a different subnet (maybe use ospf) but will be able to communicate with the other branches. I want - GRE over IPSec between HQ and Branch 2; - IPSec between HQ and Branch 1; - GRE between Branch 1 and Branch 2. I want to ping through the different VPNs and inspect the packet in wireshark. I don't need the topology, just the screen shots, every command used with Ip addresses and all, and the packet inspection in wireshark.