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Using Linksys router to add wireless to cable network

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MGP2

This is your info assigned by your ISP (whether static or DHCP)
IP Address. . . . . . . . . . . . : 82.36.210.231
Subnet Mask . . . . . . . . . . . : 255.255.248.0
Default Gateway . . . . . . . . . : 82.36.208.1
DHCP Server . . . . . . . . . . . : 62.30.192.114
DNS Servers . . . . . . . . . . . : 194.168.4.100
194.168.8.100

The 192.168.100.1 is a standard cable modem web interface. That's so you can log in and reboot the modem without having to walk to it (depending on where it is).

Here's what I'd do. Turn off DHCP on the cable modem. On the router, use either 192.168.0.1 or 192.168.1.1 for the router address and assign your addresses based on the one you assign to the router. (So, if you use 192.168.1.1, use 192.168.1.2 etc for your desktop, .3 for laptop, etc. Better yet, you can just turn on DHCP on the router and let your laptop and desktop get their info from the router). Use a standard Class C subnet mask of 255.255.255.0. Don't worry about the difference in subnet masks between your network and the subnet assigned by your ISP. That should be all you need to do.