It may work with your Desktop. It depends if your PC has the capability to use wireless devices
I wireless desktop card is hardware you install into your computer so you can connect your computer to a wireless network from a router or access point.
With a wireless network card, you will also need a wireless router, contact your current ISP to upgrade.
Yes, I use one on my desktop all the time because I have small hands.
You buy a wireless router, wire the desktop and router to the modem, and use the laptop by getting a wireless card or usb wireless adapter.
For such purposes you need at least two subnetworks. One adapter cannot be in the same time in both of them. Thus you cannot do that. If you connect your PC through wireless to another PC, and that PC is connect to the router with a LAN cable that it's doable.
It would be difficult to cart a desktop pc around when traveling, but not impossible. All jokes aside, if you are asking about airport wireless, this appears to be possible, though complicated. Perusal of your owner's manual may help you hook up your PC to airport wireless.
You will need a wireless router and a wireless adapter to have wireless pc to pc connection
Fiber
can refer to anything wireless. anything without wires. :) wireless network adapter in a desktop PC or laptop/netbook ps3 xbox psp etc wireless router wireless printer these "people" you speak of should really specify what they are talking about.
By default wireless routers block all incoming connections. You need to to open the remote desktop port on the router. And also you might have to setup redirecting of incoming remote desktop connections on a particular pc.
PC stands for "personal computer" . Therefore a desktop PC is just that - a home computer!