GD Library in Windows

[Manoel_br_rj]

Please, Somebody can help me? and tell me where did I wrong?

I write :

<?php
    header ("Content-type: image/png");
    $img_handle = ImageCreate(230, 20) or die ("Cannot Create image");
    $back_color = ImageColorAllocate($img_handle, 0, 10, 10);
    $txt_color = ImageColorAllocate($img_handle, 233, 114, 191);
    ImageString($img_handle, 31, 5, 5,  "Meu primeiro Programa com GD", $txt_color);
    ImagePNG($img_handle);
?>

And I get :

‰PNG IHDRæ£þÓêPLTE ér¿ŽLàIDATxœca€ML1qÛ7 Ȳ[ È@•ýÂE“e»ñ±!ϼ;ñÁÃ=6 ·~]Q³MžýðÑ l7g¶1ËæÝlð,Á¾/-Íò̱ۆ

... and any script I wrote, instead of pictures, I got a lot of chars.

ps. I running Windows 98 SE, PHP 5.0.0 with php_gd2.dll loaded.