Bam! click export and you should be all set.
Something that just occurred to me. I'm using GIMP 2.6 which does not "export" files. So your mileage may vary.
The extra 8 bits allows us some options.The free version of Photoshop I posted can handle 32 bit bitmaps just fine. Install the normal map plugin from Nvidia and it will create a 32 bit normal map.
It is a self-extracting archve (exe).
You're welcome.Funny thing is that I stuck with 2.6 just because I found the "export" feature annoying to deal with from an interface standpoint.
Sigh........Xtra Font Error??????
I have no idea what that error is. I have installed that on a dozen systems (Windows 7,8,8.1 and 10) and never had a problem.