Moved to new house -- new ISP and new modem/router/whatever. How to get printer to recognize new service?

Try the user manual for trouble shooting the issue: ftp://ftp.dlink.ru/pub/Router/DIR-300/Description/DIR-300+A1_Manual+v1.0.pdf.pdf Is it your wireless adapter on the computer that's the issue? Have you removed the old wireless Auto connect and reconnected a new Signal?

This might actually has nothing to do with the router itself, you may need to call your ISP (Internet Service Provider) and let them know you have a new router. They may have to configure it themselves because some modems are not plug-and-play (which means when you get a new router, the modem doesn't automatically recognize the new router.) So, your best bet right now is to call your ISP and they will walk you through it. I faced a similar issue and finally got through by simply calling my ISP, calling the router's manufacturer may do nothing, at least it didn't for me.
Try this: Unplug all internet cords, unplug all power cords. Wait about 30 seconds to 2 minutes. Connect your router to the modem with one internet line, into to the appropriate ports. Next, plug your modem into the power source, and let it run for approximately 4 minutes (or until all of the lights are on and it is ONLINE.) It varies per modem on when it is 100% online. Next, plug your router into the power source, and wait until it loads 100%. Then try plugging into one of your computers, not all, one, and preferably using Windows Operating systems because they detect internet more easily than Mac.
If all else fails, one more troubleshooting to do, and that is to plug your computer DIRECTLY from the modem to the computer via internet cord, bypassing the router. If you get internet from the modem, then it is supposed to work, the router could be the issue. If you are NOT getting the internet, then the modem is the issue.
Lastly, I really think calling your ISP would solve the issue all together. GOOD LUCK!

Each network adapter (in the Linksys router, or in your computer) has a unique 12-character code. Some ISPs (Internet Service Providers) will require you to "register" this 'MAC' (Media Acquisition Control) address, before they grant an IP-address to the device (router or computer). So, when you "bypass" the router, you're showing a different MAC-address to the ISP, and they are not allowing that MAC-address to get connected. Talk to your ISP.

Or, some cable-modems check the MAC-address, allowing just one or two computers to connect. Turn the cable-modem off, to make it "forget" the MAC-addresses that have connected to it.
Connect the router to the cable-modem.
Turn the modem on.
Turn the router on.
Connect your computer to the router.
Restart your computer.

Or, maybe the router really is "dead'; try the above, before choosing this option, and before buying a new router.

Before spending your money on a new router & possibly having the same issue again, you might want to call your ISP & ask them to reset the mac/ip binding. Then, make sure your router is the first device to connect. Some ISPs create this binding which doesn't expire for several hours during which time a new device will not be allowed to bind. Just call the ISP to be sure. Otherwise, your new router will yield the same result.
Good luck.

check the physical connection to the router. Make sure that the modem and computer are connected properly and there is no loose connection.
Make sure that your computer is able to go online directly through the modem.
If your computer is able to go online through the modem, that means the modem is working fine.
You will need to connect the computer to the router and the modem to the router.
open the set up page of the router and change the settings of the router according to the ISP.

Click Here for more information about the routers and network

try to contact your ISP make sure you are not violating any rules then try resetting your router and modem check if that works

i need more informations like your ISP,Make of modem provided by ISP, model number of router...pls update it i ll help you to fix it for sure...

Make sure that your computer is able to go online
through the modem.
If your computer is able to go online through the
modem
Then you need to connect the computer to the
router and the modem to the router.
open the set up page of the router and change the
settings of the router according to the ISP.
Click Here for step by step by instructions

It is rare that a router refuses to connect to a modem. Has your ISP authorizewd the modem for use on their network? I just replaced my own modem and had the self-same problem, till my ISP set me straight.

Well I believe wat ya need to do is simply obtain a NEW "Account" with NEW Logon & Password with a NEW Internet Service Provider. Then you set up the modem to connect to the new ISP, at the NEW ISP's address, with the NEW Password & Logon. When you got the modem ya should have got a "Setup" CD that should walk ya thru the connection routine... Below is a link for a "Users Manual" that should help you get connected. ftp://ftp.dlink.de/di/di-514/documentation/DI-514_qig_en_Quick-Install.pdf