Quite apart from the fact that your Mrs (or perhaps mom
) isn't going to rip orf your danglies for messing up the living room....
Wireless networking is perfect for online gaming. The xbox deluxe kit adapter connection is 802.11g, aka wireless G aka 54Mbps connection. Bearing in mind most live players will be using 2Mbps or lower broadband connections 54 is ample.
It's also plenty of headroom to stream media. A CAT5e wired connection would be more robust but it isn't likely to show much improvement over a wireless adapter.
Get a decent wireless router for your home network/broadband connection and you'll not look back.
MIMO pre-n is the current fave. It allows multiple 54g channels to operate simultaneously and therefore provides thoeretical 108Mbps to suitable adapters.
Belkin, Netgear and Linksys are some of the best brands. Linksys are owned by Cisco and Cisco is the daddy of networking.
edit..... also if you used a 10Mbps wired hub or router it would be slower than 54g.... it would have to be 100Mbps connection to be better!!