Networking options
Though the standard is being phased out, most notebooks still come with a 56Kbps-modem (RJ-11) connection, and virtually all include Ethernet (RJ-45) or even faster Gigabit Ethernet connections. Almost all notebooks also include built-in antennas for wireless networking (802.11, or Wi-Fi) so that you can access wireless hot spots. If you choose a notebook with networking built in, consult our wireless network buying guide to learn the difference between the networking standards that are currently on the market, including 802.11a, 802.11b, and 802.11g.
If your travels regularly take you beyond the reach of Wi-Fi hot spots, you may want to consider spending a little extra for a notebook with a built-in WWAN card. These systems let you tap in to a cellular provider's data network. They can be incredibly useful when connectivity is spotty, but the technology has its downsides: data plans still tend to be pricey; throughput speeds, while improving, are still slower than most high-speed Internet; and your built-in cellular card can work with only one cellular provider.
Depending on the model you choose, you may also have the option (often for an additional cost) of ordering a Bluetooth adapter in your laptop. This will let you connect your laptop to other Bluetooth-enabled devices (such as a printer, a cell phone, or a PDA) that are in close range.
If your notebook doesn't include any of the above network adapters, it's fairly easy to find PC Cards that get the job done.