关于mantis中安装jpgraph的问题

fogghost

进入mantis后点统计图表已经能看到图形报表的选项，可是具体点击进去就出现“JpGraph Error Your PHP installation does not seem to have the required GD 2.x library enabled. Please see the PHP documentation, "Image" section. Make sure that "php_gd2.dll" statement is uncomment in the [modules] section in the php.ini file.”这样一些话。还望高手指。点我用的EASYPHP＋mantis1.0.6，下载的是符合php4的jpgraph-1.22。我现在该怎么办？