Your router usually will not change your computers *internal* IP address... it is usually going to be static unless you change it in the router's settings.
Check out portforward.com for help with setting your specific router up.
OR you turn off the router or reboot the router, I use a linksys with 1 static LAN ip on my linux box and 2 dynamic LAN ip's for 2 winxp machines. The dynamics will change but the linux doesnt. IF paulgr is using dhcp on his windows pc and also has the dhcp server turned on in the router config then his LAN ip could be anything from 192.168.1.1 to 192.168.1.255 (depending how it is setup) Also you have to save every change before changing option pages in the router config.
Fire
