clear
Function Get-FileName($initialDirectory)
{
    [System.Reflection.Assembly]::LoadWithPartialName("System.windows.forms") | Out-Null

    $OpenFileDialog = New-Object System.Windows.Forms.OpenFileDialog
    $OpenFileDialog.initialDirectory = $initialDirectory
    $OpenFileDialog.filter = "All files (*.*)| *.*"
    $OpenFileDialog.ShowDialog() | Out-Null
    $OpenFileDialog.filename
} #end function Get-FileName

# *** Entry Point to Script ***
$Location = Convert-Path (Get-Location)
$a = Get-Content(Get-FileName -initialDirectory $Location)
$b = Get-Content(Get-FileName -initialDirectory $Location)
Compare-Object -referenceObject $a -differenceObject $b | Format-Table | Out-File ($Location + "\Compared.txt")