cURL is a must have tool if you are developing web apps .
Follow the steps to install it on windows 7 64 bit
1. Download and extract executable for cURL
2. Copy curl.exe into windows path generally it is “C:\Windows\System32”
3. download certificate file and save it in windows path as above with name “curl-ca-bundle.cert”
4. Now open your command prompt and type
curl -L http://www.google.com