Hi Osusano
According to the documentation (http://uk.php.net/curl), CURL is set to use POST as default. If you look at the user comments, you'll see that you can indeed use CURL and GET, but you have to define the constant CURLOPT_HTTPGET, at least that's what I understand.
To the best of my knowledge - and I just checked - there is no such function as curl(). I think you want curl_setopt().
If you just want a URL with a parameter, just do this: http://www.example.com?var=x&var2=y and then pick up the variable in your code using $_GET[].
Sorry not be of more help. What is it you're trying to do?
Norm