Can't get DIM to download/install to my Win64 system (edit: not available it seems)

I am really confused.  If I go to DIM download page under my products, pressing the green button - download and install nothing happens.  I have then downloaded the manual version but notice it's for Win32 systems only.  Is this maybe the reason why I can't get to download DIM via green button?  Where can I find the Win64 version of DIM, if it's available?

I have never used DIM before but since I have messed up to download and install G8 manually I have decided to try DIM instead.

Thank you for your help.

EDIT:  Have read now under DIM's new release page someone commented DIM is not working under Win64 systems currently. 

Laura