Get-FileName

Function Get-FileName{
[cmdletbinding()]
    param
    (
        $initialDirectory="$env:HOMEPATH",
        $filter="Excel Files|*.xls;*.xlsx;*.xlsm",
        $title = "Select file"
    )

     [System.Reflection.Assembly]::LoadWithPartialName("System.windows.forms") |
     Out-Null

     $OpenFileDialog = New-Object System.Windows.Forms.OpenFileDialog
     $OpenFileDialog.initialDirectory = $initialDirectory
     $OpenFileDialog.Title = $title
     $OpenFileDialog.filter = $filter
     $OpenFileDialog.ShowDialog() | Out-Null
     $OpenFileDialog.filename
}