The problem is that you have two interfaces on your PC and expecting it to act as a router, but both interfaces have IP addresses in the same IP range (192.168.0.x). Also, you have given your Amiga a gateway in the 192.168.1.x range, but this address is not in the range of its next hop on the network. The way you should configure it is to have 192.168.1.x on one side of the network (Amiga and Ethernet adapter on the PC) and 192.168.2.x on the other side (Router/Wifi/Wifi adapter on the PC). Then you have to configure the PC to route between 192.168.1.x and 192.168.2.x, and tell your router that if it wants to find the 192.168.1.x network it has to go through the IP address you give to the Wifi adapter on the PC.
Alternatively, just bridge the Ethernet and Wifi connections on the PC. It will then alocate one IP address to both, and automatically take care of the routing for you.
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moto
