Vuforia play mode error

I have windows 8 64 bit and it seems like vuforia play mode does not support 64 bit on windows.
I read in a thread that it requires 32 bit editor. Where can i get that and how to use it . Please help Thankyou in advance.

http://unity3d.com/get-unity/download/archive

Select Unity Editor 32-bit from the dropdown.