website problem?!?!?!

[volitle]

hey people of mmowned im using the Ascent WebCMS - dark v1.5 wesbsite its a gr8 simple website easy to navigate and all,
but the i cant seem to get the photo submissions to work anyone got a answer to this i would really appreciate it?

+rep to anyone who has then answer

[volitle]

please i really need help this is the last thing i need to get sorted oh and the error that comes up is this

Fatal error: Call to undefined function imagecreatefromjpeg() in C:\wamp\www\includes\photo_functions_include.php on line 19

any answer's?