Download Windows Server 2. R2 Retired Content from Official Microsoft Download Center. Supported Operating System. Windows 2. 00. 0, Windows Server 2. Windows XP. . Any application capable of displaying PDF files.
An environment variable is a dynamic "object" on a computer that stores a value, which in turn can be referenced by one or more software programs in Windows.
![Vista System Environment Variables Vista System Environment Variables](http://cromwell-intl.com/linux/pictures/windows-environment-variables.png)
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![Vista System Environment Variables Vista System Environment Variables](http://ponnu.net/wp-content/uploads/2009/01/environment-variable-settings-vista.jpg)
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The instructions on this page are intended for advanced users or system administrators. General Information. The PATH is the system variable that your operating. Windows Server 2003, Windows Server 2003 SP1 and SP2, and Windows Server 2003 R2 retired content. The content you requested has already retired. AppData environment variable points to the base location of where applications should store their data by default. UserName environment variable returns the name (logon ID) of the user that is currently logged on.