I want to use my lap top on the road. Is there a network server I can use in order to go on line to use my computer. Also. Is there a list of key codes for the different servers.

You will need to look at a cellular based service.

There are two ways to get online while mobile. Either through a WiFi hotspot or a Mobile broadband subscription service.

There are lots of hotspots all over the world, some free, some for a fee. Depends on where you are going to be.

But there is no guarantee you will be in range of a hotspot. If you want a greater chance of being able to get online anywhere, then subscribe to a mobile broadband service. Such a service uses the cellular network to connect. So anyplace you can make a cell call you can connect. But such a service requires a monthly fee.