So our Uni has a stupid program we need to download and run, which checks for up to date antivirus, before we can access the network in any other way.  To get my PS3 online I had to force my PC to have the same MAC address as the PS3 and run the program, which registers that MAC address and it can now go online.  However, I can't access my NAS to find out its MAC address as I can't get to its Browser UI without it being on the network.  All I have available right now are a dozen ethernet cables, my PC, my PS3, and a 5-port switch.  Any advice? 
(I can probably get hold of a cheap router, though I can't risk plugging this into the Uni ethernet as we have been told we will be expelled if we are caught with a router. Only switches are allowed.)
	
		
			
		
		
	
				
			(I can probably get hold of a cheap router, though I can't risk plugging this into the Uni ethernet as we have been told we will be expelled if we are caught with a router. Only switches are allowed.)
 
	 
  
 
		 
 
		 
 
		 
 
		