2 routers and 2 antennas is it possible to connect both

Hi

New here and new to the system.

I have a mikrotik routerboard 951-2n that is my current internet/wireless connection.

I have a spare billion 400G wirelessG ADSL router and a spare omni Antenna.

Is it possible to use the billion with the omni antenna to boost my wifi signal e.g so my neighbors cane pick-up the signal or as a hotspot only need the wifi signal to extend 100 meters.

If this is possible how do i go about doing so?

Thanks

You will have to run a long cable from the 951 to the 400g, and turn off dhcp in the 400g, and then it will work.

cool how do i go about turning off DHCP?

a bit confussed can someone explain in depth for me please