[lebanon]

nascimbeni, u cant install curl urself, here is what you should do
You should email your hoster and ask him if possible to either allow url_fopen to ON , or to recompile php with Curl , both are quite used and its rare to find a host the does not provide neither one of them.
Nothing hurts if you at least ask your hoster for now.

as for the above , its simple , open a notepad type this :
<? phpinfo(); ?>
close and save it to file called info.php
now upload that file to your website and open it using ur browser, then CTRL+F to find keywords : fopen ,and/or curl