I just got a Series 4 RCN TiVo. I hooked up a wireless client to the ethernet port and it connects to the internet and downloads the movies and all. So I guess the network connection is working. I see the TiVo's IP address in the router but I can't PING the TiVo's IP address from one of my computers. Is it supposed to respond like when PINGing any other computer on the network?