If you’re using Windows Vista or XP, you’ll need to install Windows PowerShell. PowerShell 2.0 works with Vista and Server 2003/8; if you’re on XP, you’ll miss PowerShell 2.0 features and be stuck with version 1.0.
Note: Windows 7 and Windows Server 2008 R2 come bundled with PowerShell so you don’t need to do anything.
If your PC is in a domain or workgroup where its use is prohibited, speak with your IT administrative staff.
Download PowerShell 2.0 (Vista, Server 2008/3)
Download PowerShell 1.0 (XP, Windows Embedded)
|Download PowerShell 1.0 for Windows XP and Windows Embedded|
Now you’ve downloaded PowerShell, why not use it as a calculator?