I don't Think You'll be able to do that without a cable or router
you can get a cable from about 45m for around $30AU.
Another thing is that you could try to move the dsl modem upstairsbut oh well.
i use a router,i got it about $90-$100AU.
If you do have a wireless router on, you don't need any other computer to be on, say if you have a laptop downstairs, and a computer with the router upstairs, the computer can be off, but the router has to stay on, and you can access the internet using the laptop from downstairs, if you have a good enough signal. Hope this helps!
You can purchase the xbox wireless adaptor if you have a wireless network in your house. It will set you back $100 though. Otherwise break out the drill and run some cable.
yes
Yes, you can. Many routers have ethernet ports which you can use for LAN.
Yes
Either on a wireless network or ethernet. Just plug your ethernet cord from your xbox to your computer. or on a wireless network choose the computer you wish.
The functions of an Ethernet to wireless adapter is that it allows you to connect your tablet, computer or laptop to the internet from wherever you are by finding Wi Fi hotspots.
No, you will have to buy a wireless router, they are nor very expensive and also buy a USB wireless dongle for your computer (if it's not already wireless) and depending on the age of your laptop; if it's modern it will more than likely have wireless built in, if not you will have to buy a wireless card OR a USB dongle.
N
The part that is connected to your computer via, wireless, ethernet or USB, the printer.
The easiest way to solve this problem: use a wireless connection. Many recent computers include a wireless NIC (network interface card), and can connect to wireless networks easily, leaving the Ethernet port free. This will only work, obviously, if this computer has a wireless card and there is a wireless network to connect to.If wireless is not an option, purchasing an additional Ethernet card will upgrade the computer to owning two Ethernet ports. One port can be used for the Internet, the other for this external service.
It you can pick up Internet signal without hooking an ethernet cord into your computer. You can get the wireless signal in the wireless routers range.