Sticky Notes is a handy little program for any version of Windows lets you "stick" notes to your screen and send them to others. Use them for reminders, for messages, for telephone notes, to-do lists, web and email addresses, office memos or anything else that occurs to you. Built-in Voice Recorder lets you record and store voice message for each note that you can play back at any time.
You can change the color and size of your notes at will, set them to ring an alarm at a given time, lock them to protect their contents and temporarily move them off the screen by hiding them. They stay around even when you turn your computer off. You can also send notes to other people via email. This program sets itself up to run automatically when Windows starts up, so it will always be available when you need it. You can prevent this if you want.