MAC/PC/printer to router. Router to modem. Modem to wall/internet. Wired or wireless router is optional, same principle.
impossible
You dont
You can connect your Xbox by wireless or wired (ethernet).
Buy a wireless router and hook it to your cable modem. PS3 does not provide broadband you must purchase it
If you connect your modem to the router, and then using one of LAN port (router's) connect the PS3 to the router, you will not interfere with wireless signal at all.
A router and the modem that will hook up to that router so it can provide the internet. Or you can wirelessly connect to the modem with Wi-Fi. You can also use a dongle for on-the-go internet.
I'm not sure, but mabye, an ethernet cable?
I have a wireless thing hooked up to the back of my xbox360 that you can buy for about $100. This is the easiest way but you have to have your modem hooked up to a router which lets you have wireless acess to the internet.
Yes, and no, Mainly yes, Because inorder to communicate back and forth, you have to have a modem. No because, The new routers have a modem built in. I own a aircard and we use it and a Cradlepoint Technology Base. It speeds up the internet nickity split.
According to the manual it should have its own interface (unless there is some trick and you have to pay for that too). You need to read the printer manual to make sure that the printer wireless is compatible with your wireless network.
Generally, a wireless software requires software to hook up with a computer. This software is included with the printer and should be compatible with most popular operating systems.