I cannot link my router and stay plugged in to DLS

try plugging the cable into your PC USB port. If the printer stays offline, restart the computer.

Connect the DSL modem to the WAN port of the D-Link. It should be labelled or colored differently. You then connect your computer to ANY other jack on the D-Link.

If you connect the computer directly to the modem, does it work?
If that works then the modem is working.
Now connect the computer to the router and the modem to the router.
You will need to open the set up page of the router to check the settings of the router.
You can set up the router without the CD also.
It is very easy.
Click Here for step by step instructions about how to set up the router

First try connection the Yellow ethernet cable from the rca modem to your computer's network connection. If you get a connection this way, then your modem will work with a ethernet cable. If not, then call Comcast for help. The modem ethernet out to computer port must be connected to the wan line of the router. Then you can connect an ethernet cable from your computer network connection to one of the 4 ports of the router. For wireless connections you must set up the router and wireless adaptor with the same settings to connect. Follow the routers directions.
Good Luck

the simpilist way to do that is to buy a wireless usb stick 15.00 then you can connect directly to update.and if u dont want kids using it for net pull the usb out .

The Alltel must hook to a wireless source. Your D-link could be that source, but then it needs to be hooked to a source. If you have a wire coming to your house you should hook this to the Wan port on the D-link. Then your computer will hook to the d-link. It then should be setup with codes for security.

Have I confused you yet? In answer directly to your question, yes your Alltel will work with your D-link. But your D-link will then be your wireless source.

Where are you getting your signal from now?

4 steps to set up your home wireless network
1.
Choose your wireless equipment
The first step is to make sure that you have the equipment you need. As you're looking for products in stores or on the Internet, you might notice that you can choose equipment that supports three different wireless networking technologies: 802.11a, 802.11b, and 802.11g. We recommend 802.11g, because it offers excellent performance and is compatible with almost everything.
Shopping list
• Broadband Internet connection
• Wireless router
• A computer with built-in wireless networking support or a wireless network adapter

A wireless router
The router converts the signals coming across your Internet connection into a wireless broadcast, sort of like a cordless phone base station. Be sure to get a wireless router, and not a wireless access point.
A wireless network adapter
Network adapters wirelessly connect your computer to your wireless router. If you have a newer computer you may already have wireless capabilities built in. If this is the case, then you will not need a wireless network adapter. If you need to purchase an adapter for a desktop computer, buy a USB wireless network adapter. If you have a laptop, buy a PC card-based network adapter. Make sure that you have one adapter for every computer on your network.
Note: To make setup easy, choose a network adapter made by the same vendor that made your wireless router. For example, if you find a good price on a Linksys router, choose a Linksys network adapter to go with it. To make shopping even easier, buy a bundle, such as those available from D-Link, Netgear, Linksys, Microsoft, and Buffalo. If you have a desktop computer, make sure that you have an available USB port to plug the wireless network adapter into. If you don't have any open USB ports, buy a hub to add additional ports.
2.
Connect your wireless router
Since you'll be temporarily disconnected from the Internet, print these instructions before you go any further.
First, locate your cable modem or DSL modem and unplug it to turn it off.
Next, connect your wireless router to your modem. Your modem should stay connected directly to the Internet. Later, after you've hooked everything up, your computer will wirelessly connect to your router, and the router will send communications through your modem to the Internet.
Next, connect your router to your modem:

first you connect the wire from the wall into the wan port in the back of your dsl modem. next you connect the outsource wire from your dsl modem into the wan port on your router. next put another rj45 wire into the number one port in the back of your router and the other to your computer. put another wire into number 2 and then to your xbox. everything need to be unplugged while you are hooking it up. once done power cycle...meaning plug up the dsl and wait for the lights to stay lit. then the router. the start your computer. if you want to go wireless just get a usb wireless network adaptor and there you are

I have unplug in and out to get on

I'm confused, you said usb printer and this is a router question. Your computer should recognize the printer if you hooked it up. What OS are you using?