64-bit Windows Static Libs

[Mike via Digitalmars-d-dwt]

In order to do the 64-bit port, it looks like I'm going to need 
the 64-bit versions of the static libs here:  
https://github.com/d-widget-toolkit/org.eclipse.swt.win32.win32.x86/tree/master/lib

It looks like I already have both 32-bit and 64-bit versions of 
the files on my computer.  But I have so many different versions.

DMD also distributes some of these files.  Where is the official 
source of these files, and how would I know which versions are 
needed?  Is there a redistributable from Microsoft?

Thanks for the help,

Mike