It only costs about $50 unless you need to buy the WI-Fi card for the PC.
MAC/PC/printer to router. Router to modem. Modem to wall/internet. Wired or wireless router is optional, same principle.
You will need a wireless router and a wireless adapter to have wireless pc to pc connection
wireless router
Yes. In fact, this is the standard, intended way for a wireless router to work. ISP/Internet service DSL/Cable-----> Modem---->Router )))))) PC ---> Cable ))))) Wireless
yes
Yes, you can.
no
yes
To get "wireless" access from a cable modem, you will need a wireless router in addition to the cable modem. Wireless routers are made by Linksys, and a number of other vendors. Start: 1. Plug the coax cable from the wall into your modem. (this is the "live" internet connection now powering your modem. The modem is now "live") 2. Run the ethernet cable from your modem into your wireless router. (this router is now "live") 3. Run the ethernet cable from the wireless router into your PC. (the PC is now "live") You are basically looping the modem into the router, and the router to your PC, instead of going directly from the modem into the PC. The benefit of looping the wireless router in between the Modem and the PC is so that the wireless router can get a live internet signal and broadcast a "wireless" signal to your home and surrounding 100 foot area. The reason you loop the ethernet cable from the wireless router (in step #2) back into your PC is so that the PC can get the internet connection. Most PC's don't have a wireless "receiver" to receive the wireless signal, and require a direct input from an ethernet cable. Most laptops have wireless ("receivers" aka: modems) and can receive the signal from the wireless router (which is now actively receiving and broadcasting the signal) which we connected in step #2. The concept is very similar to your home telephone with a wireless handset. The phone line runs into the base station, and you can walk around your home with a wireless phone. This is the same with your laptop, and the wireless router is just like the base station of your phone.
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.
One uses the airwaves, a wireless router sends a signal. The other needs a cable from the router plunged into a port on the PC.
no...you can buy things like wireless internet cards or drill holes in the wall to hardwire it but having just a wireless thing would be easiest