Connect NAS with static ip over ethernet with MBP
Does system preferences show a network connection?  You'll be counting on it switching to crossover mode - it's possible the NAS is interfering with that.  Are you defining a router IP within system preferences?  Make your machine ip 192.168.0.100, router 192.168.0.1, subnet 255.255.255.0, then try a ping.  

If that doesn't work, post the output of this command:
route -v get 192.168.0.102