CNET has a good article on setting up a wireless network "Setup a wireless network".

The article has three convincing arguments as to why you should setup a home office wireless network.

Also, the article covers what network tools you need to setup a wireless network, such as the Belkin N1 wireless router, or the D-Link DI-624 AirPlus Xtreme-G router.

Attached to the article is a movie clip showing how to setup a wireless router, and another movie clip giving an example of what one person did in setting up his wireless network and the variety of devices he now is using across his wireless network.

This article is worthwhile reviewing if you are setting out on a project to install a wireless network in your home-office.