Connect a 2 network in one pc

I have two independent networks, one is wired for internet access and second one wireless with public static ip for access unique server second one have No internet access. I’m having a problem using both networks at the same time. if i need to access the server, i always need to change the network.. i would like to access both network together. Is what I am trying to achieve possible? It seems like it should be. If it is, how do I set it up correctly?