If the LAN has internet access you could do load balancing and get better speeds, if not then use isp's settings on cable connection and university settings on the other one and it should pretty much figure it out for itself. The directly connected nic will always be preferred so your LAN connection will be used for that network by default. If the LAN does not have a internet gateway, the cable nic will automatically be used as it is the only one with a connection to the network you are trying to reach. If you want to restrict how the traffic flows you do that with the route command, but I don't see why you would even need that.
Poor windows was not a brave soul. Threatened by the force of General Protection and Major Problem the little OS committed suicide by hanging.