Php cURL Security

Hi

I need help. 
I have been looking all over the Internet and
 posting questions in forums, but so far i have just been confused and 
lost due to conflicting posts and poor documentation.

I am using 
cURL as a php extension in order to post sensitive data to a server. My 
question is, how secure is this, can anyone intercept, read or change 
the data in transmission?

On some posts people have told me to use https, but i have no idea how 
to do this or where to start. I realize i might need to use SSL 
certificates but i am unsure of many things, 

is it as simple as posting the data to a HTTPs URL "https://www.....", or  using the curl set options:


curl_setopt -  CURLOPT_SSLCERT
OR
curl_setopt - CURLOPT_SSLCERTPASSWD
?

so far my request consists of :


    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, "URL");
    curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
    curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);
    curl_setopt($ch, CURLOPT_HEADER, false);

    curl_setopt($ch, CURLOPT_POST, TRUE);
    curl_setopt($ch, CURLOPT_POSTFIELDS, $String);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);


Any advice will be greatly appreciated . thank you .

_______________________________________________
http://cool.haxx.se/cgi-bin/mailman/listinfo/curl-and-php