There are dozens of networking tools available for Windows XP/Vista/7 (For example, see this command-line reference.) Most of these are specialized and are mainly of interest to professionals who are maintaining a large network. Many, however, are relevant to the Internet and some of these can be helpful to the average PC user. The tools of interest to the discussion here are a few of of the TCP/IP utilities. (Go here for a complete list.) TCP/IP refers to the set of protocols that are used for Internet connections and on most networks. Discussing TCP/IP is beyond the scope of this page but more details are available on a separate page and in the references in the sidebar. Fortunately, it is not necessary to understand the gory details of TCP/IP in order to make practical use of the tools considered here.
All of the tools are run by opening a Command window and entering the appropriate command. Go to Start-Run or Start search and enter "cmd" to open a Command window.