This program will let you have a list of reminders and it will pop up with a message box when the selected time/date comes...
#include <GUIConstants.au3>
#Include <GuiListView.au3>
#include <String.au3>
Opt("TrayMenuMode",1)
GuiCreate("Reminder", 600, 500, -1, -1)
GUISetBkColor (0x6BC072)
$main = GuiCtrlCreateListview("", 5, 5, 590, 445, $LVS_SHOWSELALWAYS)
GUICtrlSetBkColor(-1,0xA6D9AA)
_GUICtrlListViewInsertColumn($main, 0, "Event", "", 316)
_GUICtrlListViewInse