Unity Facebook integration for android

I am trying to add a "Like and Share" button in the android game in making and im having a hard time trying to get the Facebook sdk working. In the Facebook Settings tab under Android Build Facebook Settings it is giving me this error: "OpenSSL not found. Make sure that OpenSSL is installed and it is in your path". Im not sure what it means by this, I have downloaded Openssl and the documentation on it is horrid so installing it is a challenge. What does it mean by your path? If it means my java install path then I have copied the files for OpenSSL into that path already.

Any help on this would be fantastic!