For publishing your Announcement ad please visit the following link: http://announcement.releasemyad.com/
Here you select the newspaper in which you want your ad to get placed. Then filter your selection by clicking on Lost and Found and proceed further with the booking process.
On the Compose ad Page you can put in the details of your lost document and the award and can design it with the help of the templates.
To know about the rates you can visit this page: http://www.releasemyad.com/rates_offer.php