Great news all pc users can now have Blackberry messenger, Whatsapp, Instagram and any other Android Apps for free on there Pc using a simple Android Emulator called
Bluestacks Follow the steps bellow
Here is a pic of my BBM on pc
Lets get started
DIFFICULTY:
MODERATE
First download Bluestacks from the attachment bellow Or Click here to downloadLaunch it

Accept the License Agreement by clicking Next

Then allow the app to download and Install all the required components

After installation Launch the app and Search for your desired Android app (BBM, Whatsapp, Instagram etc) then download

That all
Enjoy BBM, Whatsapp etc on your PC
Dont forget to
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If you are having problem with installation, Ask your questions below