How to Set up an iPhone 3G WiFi Network

Introduction
Wifi access is one of the exciting features of the new iPhone 3G which is designed to use WiFi wherever it’s available. As befits the updated, hotter-to-trot cousin of the original iPhone--it surpassed sales of 1 million units in the first three days the device was available--WiFi is far faster than any mobile networks now in place. For iPhone users with existing WiFi service, automatic use of WiFi for data service will not only be far faster, but far cheaper: And free in many cases.