I've been asked why not use a wireless network?
My thoughts are:
1. Wireless networks have deadspots
2. Wired networks can reach 1000 mb/s - which is great for moving video files
3. Wired networks are more secure
4. I can always combine wired and wireless if i choose
5. Some network appliances do not support wireless yet - such as my flat screen tv's - Sony Bravia - which can display internet video
6. I can wire the places for less than $2000 - maybe as cheap as $1500