#input box
[void][Reflection.Assembly]::LoadWithPartialName('Microsoft.VisualBasic')
$title = 'Genesis Rollout Config'
$msg = '[Genesis] 확산할 국가 코드를 입력하십시오:'
$text = [Microsoft.VisualBasic.Interaction]::InputBox($msg, $title)
echo $text
#popup
$wshell = New-Object -ComObject Wscript.Shell
$wshell.Popup($text,0,"Done",0x1246)
$wshell.Popup($text,0,"Done",0x1246)
Popup Method
https://msdn.microsoft.com/en-us/library/x83z1d9f(v=vs.84).aspx