iPhoto Keyword and Descriptions

Over the last year, i have spent a lot of time scanning over 1,400 very old family photos into iPhoto 09 and have added keywords and descriptions. Now I would like to provide the enhanced pictures along with the keywords and descriptions to various family members as files on CD or DVD, but when I create a CD with the picture files (as .JPG), it doesn include the keywords or descriptions. Is there way to include the keywords or descriptions along with the photos so they can be viewed by users who have Windows PC's or Mac's? Thank you.