Add-Type -AssemblyName System.Windows.Forms

Function Show_Reminder{

[System.Windows.Forms.MessageBox]::Show($Reminder,'1st Reminder','OK','warning')

}

$runasAlias = [Environment]::UserName

$Reminder = Get-Content "C:\Users\$($runasAlias)\RemindMe\Memory\Reminder1.txt"
[DateTime]$Time = Get-Content "C:\Users\$($runasAlias)\RemindMe\Memory\Time1.txt"

[DateTime]$Date = Get-Date
[DateTime]$DateTime = $Date.ToString("yyyy-MM-dd  hh:mm")

Start-Sleep (($Time) - ($DateTime)).TotalSeconds

Show_Reminder