It can only be suggested that one finds a good tutorial online which explains how to do this such as that provided by IBM developerWorks. It is not possible to explain in a short answer.
You plug your wireless into dsl router (you'll need to configure your router), and then configure your computer to the wirelessJust get a lan cable which is usually ships with wireless routers. Connect one end of the cable in wireless router port which is called wan or intertet. Another end of the cable connect to your modem. Then restart the modem and the router. Sometimes you might need to change settings for internet coneection and DHCP server. But usually it's not required.
You need to have a wireless router compatible with your wireless adapter and LAN cable of CAT-5 at least. Use the cable to connect the modem and the router, use WAN port of the router. After that configure the router for your needs. And you are ready to go.
This is an 802.11b WiFi modem in your computer
This depends on your network. In most networks, you just plug it in and it is usable but sometimes you may have to configure the internet settings. If it is for the internet contact your ISP
No, you can connect your computer directly to the modem (you need a lan cable for that) if you have one.
It depends on what your computer's sharing settings are configured to.
You don't have wireless network cards you have to buy it or you have to get a lan cable(s). After that connect your router to the modem if you have it. And connect all your computers to the router. Usually default settings allow you to work with internet and inside network without any correction of default settings. After that restart your modem (if you have it) and restart your router. Then Start->Run->cmd, press enter. ping (one of your computer's Ips), for instance, ping 192.168.1.3 If it doesn't work out you have to configure DHCP server for your router, but it's already another question.
Depends on what device you are setting up. LAN is your local area network (note the initials). WLAN is the WIDE network outside of your LAN. Usually you don't need to change WLAN settings unless you are configuring a router. In that case, read the fine manual!
LAN is internal. IE, your computer, router, modem. WAN is external, such as your computer, a server on the internet, a corporate database. Not to be confused with WLAN, which is wireless LAN
When using bridge mode, a person can extend their LAN service to another or through another modem. LAN can be made faster if bridged through a DSL modem.
When using bridge mode, a person can extend their LAN service to another or through another modem. LAN can be made faster if bridged through a DSL modem.
An Internet working device used to connect different LAN segments is called a Modem. A Modem can be either hard wired to the computer or use a Wi-Fi connection to connect to the computer. Dial up Modems were also used that ran through telephone lines.