Get on the Net
When you want configure your Mac for Internet access, don't bother looking for OS 9's Location Manager, TCP/IP, Modem, Remote Access, AirPort, or AppleTalk control panels. OS X replaces all of these with the Network pane in System Preferences (under the Apple menu). The Network pane also throws in a few extras, such as such as support for PPPoE (PPP over Ethernet), to make sure all bases are covered. It's handy to have all of these settings in one spot, but navigating all the options takes some getting used to. Dial-up and AirPort network connections can be established easily from the Internet Connect utility (not shown). You'll find File Sharing, including built-in FTP-server support, in the Sharing preferences pane (also not shown).
The Right Connections Once you've configured your networking connections, OS X helps out by switching among connection types, automatically selecting the best one available. For example, imagine you can connect your PowerBook to your office network either by Ethernet or AirPort. Mac OS X will look for the Ethernet connection first (it's fastest), but if it doesn't find it, the OS will default to an AirPort connection.