Yes, it can. Some type of modems and routers can use only a particular type of the twisted pair. If you are not sure about your hardware, just avoid cross cables (usually they are read colored).
There are at least two ways. First, you connect the wireless router directly to the cable modem, and then the switch in the wireless router. You have to connect the cable coming from the modem in the wireless router internet port. Second, you connect the wireless router to the switch, again the cable coming from the switch you have to connect on the wireless router internet port. It's better to put the wireless router just after the modem, but it's not required.
Your router WILL need to be wireless to connect wirelessly to your Xbox, but you can use an ethernet cable if your router is not wireless, straight from the router to the XBOX
UTP (unshielded twisted pair) Cat5 or Cat6.
You need to have a wireless router compatible with your wireless adapter and LAN cable of CAT-5 at least. Use the cable to connect the modem and the router, use WAN port of the router. After that configure the router for your needs. And you are ready to go.
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.
If the wireless router is like mine then you also can make an ethernet connection with the PS3 using an ethernet cable
Yes, your xbox can connect with your wireless router. You must buy the wireless add on for the xbox. If you don't wish to pay $100 for the wireless add on, you can just connect an ethernet cable from router into the xbox.
The wireless router that I have needs to have a wired connection to the internet service and then devices can have a connection without a cable to the router.
Purchase a router and an ethernet cable and connect the router to the cable modem and then connect everything to the router if you get the wireless router then you connect wired devices to the back of the wireless router and you can go WiFi to connect the PS3 or connect it with ethernet cables for a better connection.
connect the cable modem to PC using the usb port, leaving you the ethernet porton on the cable modem to connect to the wireless router.
You either need a wireless router or an ether-net cable.
If you want to use wireless internet to connect a second PC to a router, you can use a cable cord, or coaxial cable. This can be hooked directly to the router.