IE:

$ie = New-Object -ComObject InternetExplorer.Application

 

Excel：

$excel=new-object -comobject excel.application

 

Word:

$wordApp = New-Object -COM Word.Application

$file = (dir Sample.doc).FullName

$doc = $wordApp.Documents.Open($file)

$text = $doc.Content.Text

$text

$wordApp.Exit

 

Perfcounter:

$counter = New-Object Diagnostics.PerformanceCounter