Although the New Connection Wizard does an admirable job of trying to simplify the hairy process of accessing the Internet, it's not always appropriate. Here are a few cases when you may want to arrange your settings manually:
You already have an Internet account.
You have a cable modem or DSL connection.
The New Connection Wizard didn't find any ISPs with local phone numbers for you, but you've heard about a local service—offered by your local PC user group, for example—that sounds just right.
Your PC is connected to a network through which your company provides Internet service.