what exactly are you looking to do?
here is an ex i wrote for login
$url = "http://www.website.com/login.php";
$ch = curl_init();
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, 1);
curl_setopt($ch,CURLOPT_COOKIEJAR,'cookie.txt');
curl_setopt($ch,CURLOPT_URL,$url);
curl_setopt($ch,CURLOPT_POST,1);
curl_setopt($ch,CURLOPT_POSTFIELDS,'username=myusername&password=mypw&mode=login&somesettings=&usertype=C&redirect=somesetting');
#curl_setopt($ch,CURLOPT_VERBOSE,1);
ob_start();
curl_exec($ch);
ob_end_clean();
#print_r(curl_getinfo($ch));
#echo "\n\ncURL error number:" .curl_errno($ch);
#echo "\n\ncURL error:" . curl_error($ch);
curl_close($ch);
unset($ch);
for more info:
http://us.php.net/manual/en/book.curl.php
