Can anyone tell me what a Wireless Desktop Network Card is and how is it to be used?

A wireless network card is simply a circuit board that provides wireless capability to a desktop computer. They plug into a PCI slot inside the computer, and generally have a small antenna that protrudes from the back of the case. It is used to "talk" to a wireless router or other wireless access point. Alternatively, you can purchase a wireless interface device that connects to a USB port; they look a bit like a thumb drive, and you don't have to open the case to install it. You can also move it from your desktop to your laptop or to another computer if you need to.

Wireless mean no wire

go to any store you can see that read about it but it only work with high speed Internet not with phone line.

and it goes inside the Desktop computer right next to where is your modem or there two white color slots which also called

pci slots in there then boot your computer and install the drivers

g.luck

A PCi card that can be used in a desktop environment, rather than a mobile solution. Usually used if getting a cable to the location is not conceivable.

here is an example:

http://www.newegg.com/Product/Product.asp?Item=N82...

ok this card is a harware that reconosice all frecuencys in the air, off course the internet frecuencys. i writen poco becuse i dont speak inglish very well.