Yes. There are loads of different ones on the market, from internal ones to external ones.
Personally I recommend external USB ones.
Internal ones are good too, but take up a PCI slot thatcould be given to something more worthwhile. Most home users cant install them. And, if and when you get a second desktop, you cant share the device.
Yes your computer must have a network/wifi adapter to connect to your router.
Not necessarily. Although a computer needs wireless access to the router, you can purchase a wireless adapter that attaches to the outside of your computer if you don't have an internal card.
You need to change the network card in your computer with a wireless one, and buy a wireless router. Need 2 items: wireless router wireless network card
You need a computer to access the internet. You need a modem, and a wireless card in your computer.
If you do not see signal from your router, it means that the signal is not strong enough an you need to get a wireless extender or a better router.
You can use any wireless card for your new computer. The linksys router uses the same standard for wireless internet as all the other routers. Any modern wireless card will do.
No. You need a wireless router, though you don't necessarily need a computer.
If your computer soes not have a network card installed you will need tp purchase one.
Yes. You need an 802.11 wireless card.
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.
You need to have two things: a wireless router and a wireless adapter compatible with the router.
If it is WIFI then you will need to connect it with the cable first to set up the passwords and access keys for wireless. Then, if you have a wireless card on your computer, you won't need the cable after setting it up.
If the printer is connected to another computer via a cable, then you need something for the wireless computer to connect to. It would either have to connect to a wireless router or you could have a wireless card in the other computer and configure the two to talk to each other. But using a router is a far better solution. Then you can setup the printer as shared from the first computer and configure the two comptuers to be in the same workgroup and share it that way.
Yes. You need a wireless network adapter card in your laptop or computer and a wireless router