a cool file select powershell script I found.

Select-FileDialog.ps1

function Select-FileDialog
{
  param([string]$Title, [string]$Directory, [string]$Filter="All Files (*.*)|*.*" )
	[System.Reflection.Assembly]::LoadWithPartialName("System.Windows.Forms") | Out-Null
	$objForm = New-Object System.Windows.Forms.OpenFileDialog
	$objForm.InitialDirectory = $Directory
	$objForm.Filter = $Filter
	$objForm.Title = $Title
	$Show = $objForm.ShowDialog()
	if ($Show -eq "OK") { 
		Return $objForm.FileName 
	} else {
		Write-Error "Operation cancelled by user."
	}
}