How to simulate another browser

Hi there. Does anybody of you know simulate another browser when accessing pages on the internet by FOpen? I'm programming a WAP service that opens some address by this command: FOpen("http://www.ceskywap.cz/"); "Ceskywap.cz" server is my server and I programmed a script http://www.ceskywap.cz/index.php3 which takes variable $HTTP_ACCEPT and test it for containing "wap" string. If does, then it returns content for WAP browsers, if doesn't, it returns content for regular HTML browsers. I have to get WAP content, so I have to add "wap" to $HTTP_ACCEPT in order to receive WAP content, not HTML content. Do you know how to set $HTTP_ACCEPT when using FOpen? Or have I to do it another way? Some other scripts that I am not managing also determines a type of content from the value returned by GetBrowser(). Is there any way to change that value when using FOpen? Thank you very much. Marek Blahus (blahus@seznam.cz)