How to create wireless and wired connection with one jack?

Hello, and thanks for reading my question:

Our family has dial up and one jack.

We have wired Internet, but we would like to also like to have wireless Internet. Our modem doesn't have another jack for our Linksys router. How can we have wireless and wired Internet? Do we need a dual Internet wire? Thanks, and sorry for the lack of information.How to create wireless and wired connection with one jack?
The thing is is that what you're doing is a little outdated, but nonetheless possible. You will need some discontinued equipment from Ebay.



SMC Barricade 7004



Here's one I found.



http://cgi.ebay.com/SMC-Barricade-4-Port鈥?/a>



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Another way, but not as slick is to do it with software, setting one pc up as a server. The first link below describes how to setup Internet Connection Sharing in Windows. The wired computer must run for any of them to work though, but it's your cheapest option. You simply plug your phone wire into the modem plug on your computer. Then connect the computer LAN connection to your router. Not sure what router you got, but it may go into the ';WAN'; port. Now setup your network in';Ad Hoc Mode'; using the link below.How to create wireless and wired connection with one jack?
You buy a wireless router and plug the one ethernet jack from the modem to the router. Then most routers have more connections coming from the router that would be a wired ethernet cord that can go to a desktop or laptop computer
Plug the phone line from the wall into the router into the wan port then use another port on the router and plug a cable from there into the computer and you will have wireless and wired.