Help with flash, php and cyrillic

Hello! I am making one flash project for online shopping. Everything is working great and i’m very pleased with the result for now. When the “Order” button is pressed the info is send to php file which sends info to the owner e-mail address, so he can review the order and confirm it. So he problem comes when the client types something in cyrillic and in the received mail it comes as “???” How can i fix this encoding problem?