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.
Yes, you can. You have to configure your router to work in compatibility for G networks.
You do not really have to configure a Linksys wireless internet router. It will do this automatically by picking up signals after you attach the Ethernet cable.
Usually they are, you have configure the router for G wireless networks.
If you want to buy a wireless VOIP router for your Toshiba desktop then you should look into Linksys. You can buy the router for your desktop at Linksys.
username and password and wireless connection
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To set up a router in one room and a desktop in another, first connect the router to your internet source (like a modem) using an Ethernet cable. Then, use another Ethernet cable to connect the router's LAN port to the desktop in the other room. If running a cable is impractical, consider using a wireless connection by connecting the desktop to the router's Wi-Fi network. Finally, make sure to configure the router's settings through its web interface for optimal performance.
If you mean a wireless network connection - you should buy a WiFi adapter (USB or PCI or PCI-e), install it in your computer and then set-up a new network connection. If you mean wireless as no-cable-power - there is a problem. Desktop computer uses much more power than laptop and no battery can power it for a time longer than few minutes.
the routers function is to make internet wireless for laptops and other wireless devices
Yes, This is for adding a wireless antenna to a desktop or laptop computer that does not have wireless built in. You still need a wireless router connected to your internet provider.
A laptop is a PC. You don't need a desktop PC to configure a router, you can use a laptop to do so, by connecting to the router via a network adaptater - either via wifi or ethernet. Both ways of connecting are included on laptops nowadays.
For a wireless router setup a computer with a wireless network adapter is needed. The wireless router is connected to a modem using a ethernet cable. The wireless router should also be connected to a computer. After this the computer should recognize the router and guide you through the rest.