I had originally used this on my Windows 7 laptop. I no longer have access to Windows on it as the HD on it has become corrupted (I can't even get to the login screen). I downloaded the 64-bit version as my new PC is 64-bit. Upon trying to run it, I got an error message that I needed d3dx9_42.dll. I downloaded said file and then got this message:
It's bigger than the normal DirectX runtime download but you can install the redistributable runtime package without an internet connection (aka. offline). Although the system requirements don't mention Windows 10 (nor Windows 8 or 8.1), the package also works on those versions of Windows.