If you are assigning the Tivo a static ip of 192.168.1.102, then the Tivo will not show up in your DHCP map as you are not using DHCP to give it an IP address. Unless you have changed it, most Linksys routers start DHCP addresses at 192.168.1.100. The router would give the first device it finds an IP of 192.168.1.101 then next would be 102 and so on. If yours starts there and you are not limiting the maximum number of DHCP addresses to 2, then the static IP you have assigned your Tivo is in your DHCP range which is most likely causing your problems. I have my DHCP start at 100 and assign a maximum of 10 IP's meaning my DHCP list would stop at 110. The static IP's I assign my Tivos start at 192.168.1.120 and go up from there to avoid any IP conflicts.