It's a Windows thing - on Windows XP if you hit [Windows key] + [break] to bring up your System Properties dialog then go to the Advanced tab and then click on the "Environment Variables" button at the bottom. This will show a dialog which allow you to put in user/system variables - they are essentially commands which return a defined value when they are called and from whatever location.
For example, if I open up the command prompt and type "echo %windir%", that returns the environment variable which is the path for my Windows installation directory ("C:\WINDOWS"). Same goes for any other variable defined this way and anything can access these variables.
Hope that helps
For example, if I open up the command prompt and type "echo %windir%", that returns the environment variable which is the path for my Windows installation directory ("C:\WINDOWS"). Same goes for any other variable defined this way and anything can access these variables.
Hope that helps
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