Do you want to execute a program on your PC from a remote location? If the answer is Yes, then you need a telephone to make a call, and a modem and Ring Catcher on your computer to run the program. All you need to do is specify a program that will be executed and you can set off on your journey and run the specified program from wherever you are (for example, you can switch on the alarm or heating, run PC Anywhere to access a remote computer, run the Internet server on a dial up line, IP phone). You do not need to pay for the phone call if you want to inform your colleague on another continent that you would like to speak to him/her (just activate the program), then make a connection through the Internet.