Yes, there are few ways through you can use whatsapp on your PC but let me tell you I have seen people complaining that it doesn’t work as per their expectations.
Still here is a shortcut:-
>> Download you youwave from youwave.com/
>>Now download whatsapp from WhatsApp site: http://www.whatsapp.com/android/
>>Install YouWave on your computer.
>>Now you need to Copy the WhatsApp.apk file in to the directory.
>>Now Click on View, Redraw icons and you will see WhatsApp shortcut.
>>Now you need to Configure WhatsApp on Windows PC.
>>In order to do that Open /Double click WhatsApp on YouWave.
>>Using mobile phone register your number.
>>Choose "call verification".
>>You will recieve a call from WhatsApp and verify that code through your laptop.