Problems with GD

Hi, I have configured and installed php 4.2.1 enabling the support for gd library. The output of phpinfo(), in the section relative to gd, says: GD Support enabled GD Version 2.0 or higher FreeType Support enabled FreeType Linkage with freetype JPG Support enabled PNG Support enabled WBMP Support enabled So I did a sample script like this: Header( "Content-type: image/jpeg"); $image = imagecreate(200,200); $maroon = ImageColorAllocate($image,100,0,0); ImageFilledRectangle($image,0,0,200,200,$maroon); ImageJpeg($image); It doesn't work, I don't get any errors, I see only the space where should be placed the image, I've also tried with png but it's the same... I use RedHat Linux, Apache 1.3.23, PHP 4.2.1 and my configure command is the follow: ./configure' '--with-apxs=/usr/sbin/apxs' '--with-mysql=/usr/local/mysql/' '--enable-xslt' '--with-xslt-sablot=/usr/ local' '--with-java=/usr/java/j2sdk1.4.0' '--with-freetype-dir=/usr/lib' '--with-gd=/usr/local' '--enable-gd-native-ttf' '--enable-gd-imgrstrttf' '--enable-gd-all' '--with-zlib-dir=/usr/local/include/' '--with-jpeg-dir=/usr/local' '--with-png- dir=/usr/local' Can someone help me understand why I dont'see images ?? Thanks, bye