ok 嫁... wireless router by default 會enable 左DHCP 既function assign 假ip 俾你 connect 住隻 wireless router 既所有 pc (當然 你部pc要set assign ip address automatically and well configured the wireless lan card) 再用 NAT 既方法張你果兩部 PC 個假 ip 用port translate 做真 ip 出街. 而你隻 router assign 俾你既 ip 都會係同一個 subnet 又唔會 block 你任何 traffic 所以係可以 PC connect PC 嫁.....
you diagram should work the only thing that is not working maybe the telephone plate since you need to trace the cable well before you work on that thing.