GD2 wont run

Hi there. I have recently downloaded the GD2 package to use in my PHP pages for image manipulation. However, when I try to access a PHP page using these functions, it keeps telling me that the module cant be found (php_gd2.dll) I've even tried regsvr32 path/php_gd2.dll, but that also tells me that the module cant be found. In fact, none of the dll's that I downloaded in the zip file will register. Could it be that the files are faulty? Regards, John