Enable cURL in IIS

1. uncomment the line in your php.ini where it says php_curl.dll and save the file
2. copy php5ts.dll and libeay32.dll, ssleay32.dll, php_curl.dll to the WINNT/system32(Windows 2000)/Windows/system32(WindowsXP and 2003) directory 
3. restart IIS
4. check phpinfo page and have fun