SAP BW Connection

Hello.

I am new with connecting to SAP BW.

I already read post about SAP BW on the link below but still failed and still got an error.

http://community.powerbi.com/t5/Integrations-with-Files-and/SAP-BW-Connector-SAP-NetWeaver-library-SAP-Support-Portal/td-p/62640

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Is there a pre-requisite for this? Like an app that needs to be installed on my PC on where the PowerBI Desktop is installed?

Any help will be much appreciated.

Thanks,

Lester