Powershell script to expand archive files using Windows's shell.

Expand-Item.ps1

function Expand-Item
{
  param
  (
    [Parameter(Mandatory=$true)] [string] $zipFile,
    [Parameter(Mandatory=$true)] [string] $destinationDirectory
  )

  if (!(Test-Path -Path $zipFile -PathType Leaf))
  {
    throw ("Specified zipFile is invalid: " + $zipFile)
  }

  if (!(Test-Path -Path $destinationDirectory -PathType Container))
  {
    New-Item $destinationDirectory -ItemType Directory | Out-Null
  }

  $shell_app = new-object -com shell.application
  $zip_file = $shell_app.namespace($zipFile)
  $destination = $shell_app.namespace($destinationDirectory)
  $destination.Copyhere($zip_file.items(), 0x14)
}