[U2Lynne]

The 131.191... one is your external IP which your ISP gives to you. The 192.168... one is your local IP, the one the router uses to distinguish the different computers hooked up to it. It is this local IP that you need to make static. Routers can use something call DHCP to assign your computer a different IP everytime you turn it on (since it is different all the time, it is called dynamic). You need to tell your router *not* to give out a dynamic IP everytime you restart your computer. You need to turn DHCP off in your router and then tell your computer not to use DHCP and instead specify an IP address (that will look like the 192.168.. one).

(People can also have a static external IP. Some ISPs give them away for free, with other IPs you have to pay to have a static one. Most people have a dynamic external IP.)