SecureNote turns your message into a very small encrypted password-protected executable (starting at 14kb) that asks for an answer to your custom prompt before the message can be read. The prompt can be "What is your birth city?" or anything you can think of. SecureNote can be used to send any kind of information you don't want just anybody to be able to see. SecureNote works on Win95/98/ME/NT/2000/XP. The product is about 1.5mb and will take 5 minutes to download on a 56k modem.
You can find the demo at http://www.bdargo.com