php developer - URGENT

This problem needs fixing now Existing website has been moved from 1 server to another Old server ran fedora, php 5.x (not sure vhich version). New server runs centos and php 5.3.3 Code executes "curl" .pl process on same server - 2 different domains and ip addresses Internal server configuration error is returned. This is the curl function function e21Curl($Query,$Url){ URLencode($Query); $Url.="?$Query"; $ch = curl_init(); curl_setopt($ch,CURLOPT_URL,$Url); curl_setopt($ch,CURLOPT_HEADER,0); curl_setopt($ch,CURLOPT_RETURNTRANSFER,1); curl_setopt($ch,CURLOPT_POST,1); curl_setopt($ch,CURLOPT_POSTFIELDS,$Query); $Results = curl_exec($ch); curl_close($ch); return($Results); } $Query Site=homearound&ArrivalDate=29/09/2012&dd=29&mm=09&yy=2012&DepartDate=06/10/2012&ddd=06&mmd=10&yyd=2012&Language=eng&Basis=AO&Currency=EUR&NumberNights=7&Adults=2&PlaceNo=8&Html=[login to view URL] results $URL [login to view URL] I suspect ths is a curl configuration issue.