I have installed gd-1.8.4 in apache server without any problems.To check if the gd can work,I write some codes with php like this: <? Header("Content-type: image/gif"); $im = imagecreate(40,30); $black = ImageColorAllocate($im, 0,0,0); $white = ImageColorAllocate($im, 255,255,255); imageline($im, 1, 1, 350, 25, $black); imagearc($im, 200, 15, 20, 20, 35, 190, $white1); imagestring($im, 5, 4, 10, "Graph TEST!!", $white); ImageGif($im); ImageDestroy($im); ?>. However,the output in IE is the warning message:" <b>Warning</b>: ImageGif: No GIF create support in this PHP build in <b>/usr/local/apache/htdocs/index.php</b> on line <b>9</b><br>".why?? when I add comment to the line of ImageGif($im),nothing is displayed,why?? ps:my php work very well in this server. help,please!!