Even though business travel used to be easy -- you could just pack a bag and a briefcase and hit the road -- staying in touch with the office was hard.But now, new technology gives us plenty of ways to keep in touch. And if staying connected is part of your job, it helps to know where you can access the Web and read your email, even if it means a little pretravel planning. How you'll connect to the Internet will vary with your hardware or service agreement. Your laptop or PocketPC might have a connection to a CDMA-based PCS wireless network like Sprint's ( S), or you may just have a generic 802.11b/g Wi-Fi card. CDMA and Wi-Fi access coverage areas are expanding, as business high-speed wireless is becoming more in demand and employees need connectivity to the office network and email while away. Hotels, airports, bookstores, coffee shops and now even whole cities are gearing up for online connectivity.