Cable setup
From MikroTik Wiki
Basic Cable Internet Setup
First we will configure interface that is connected to WAN.
/ ip address add address=192.168.1.20/24 network=192.168.1.0 broadcast=192.168.1.255 interface=ether2
Now one interface is configured and connected to WAN (with ip 192.168.1.20/24). Now we will configure second interface for our Local Network.
/ ip address add address=192.168.0.1/24 network=192.168.0.0 broadcast=192.168.0.255 interface=ether1
Now we will configure DHCP using WinBOX, download Winbox from http://www.mikrotik.com and login to you MT Router. Then goto IP > DHCP-Server, now