It certainly doesn't look right for configuring the Belkin! It looks as if the system configured itself from the DPC2100R2. Please post the /etc/interfaces file, the one you prepared for configuring the Belkin. The simplest way to make a new interfaces file take effect is to remove any connection to the DPC2100R2 and reboot the commputer.

I don't have access to this particular model but it's certainly not as documented and not normal for the models I have reset. Are you confident you are actuating the reset switch?

pretty sure I am actuating it. I can feel a click of sorts when I push it in. I will post the interfaces file when I get back to that PC later, but it is definately saved as per the settings you suggested earlier. I was sure to double check on that and I have unplugged, rebooted, replugged, etc. in various combinations, all to no avail. Of interest too may be that it is not /etc/interfaces on my box...it's /etc/network/interfaces. IDK if that's a problem or not...

Sorry -- it should be /etc/network/interfaces; my mistake for calling it otherwise.

@woodmaster
I have ad this happen.
Unplugging and replugging the router and rebooting the problem computer fixes it.

With some routers, I've done the reset by unplugging, waiting a couple of minutes, then plugging it back in while holding the reset button in, and continuing to hold the reset button in for about 30 seconds after applying power.

unplugging, rebooting, replugging while holding reset, etc. Have tried all this to no avail...several times.

It will not work however many times you try it if the computer does not have the right IP configuration to connect with the Belkin, as established in this post above where the content of the /etc/network/interfaces (name corrected) was requested.

I didnt see the Wlan interface on your router. As you said you are trying to connect the router with wireless, first enable the wireless then try to connect.

This is not the PC I am connecting wirelessly from. It is wired. The wireless on the router was enabled and working, until I made an error: I was attempting to configure a wireless card on another computer on my network when it froze during the reboot phase after making settings adjustments.

Here is my interfaces file's contents

route -n

ifconfig

The interfaces file looks good but the ifconfig output shows it has not been effective. Rebooting should have made it effective but something else may be changing eth0 (the first Ethernet adapter). We need to apply those settings so let's try with more finesse than rebooting. Can you try
If that shows then we are OK and you can try continuing with "Logging into the WURE" on page 15 of the manual.

I have been reading this on and off. Your other computer that is wired will connect to the internet through the router. but the other computer wireless has only one ether-net card and it is just wireless.
if this is so it would be eth0. if that computer has 2 cards then the wireless would be eht1 or wlan0. that said.

your wireless eth0 card is not connecting to the internet. Please ask your self and the IP company do you need to clone your mac address that used by the original ether card from the wired machine.
That would mean you need to have the router use the mac address as the card you set your account up with.

What will happen after a complete reset it will pass the packets from your wired card right through the router and you will connect but the router will not be working. you need to configure the router to use the
mac address of your original card that set up the account.

Disconnect the router from the modem. Reset the router. Configure mac and router. turn off the modem turn off the router.turn off your PC. Reconnect router to modem. restart modem wait till green then start the router. then start your pc.

this way the IP will talk to the router and you can connect to the router. this is in the manual. but not about some IP's cloning mac's like most of the cable IP do. In your router configuration set the router mac address as the original wired card used to set up the account.
if you are unable to access the router then life is to short to spend days working on a 50 dollar router.

Good luck

The PC has 2 cards...wlan0 is the wireless. It won't connect wired right now either though...

Never really set up an ISP account. The cable guy had no clue what Linux was. He did his work at the box outside, ran a cable in, plugged it into my Ubuntu PC(through the modem), and I was online. That was all. I will try the rest of your suggestion to see if it works. Unpowering/ rebooting can't hurt I think...

@catkin: