Once you have a working cubemap, you can drop it into your level and it should show up as any other Actor if it is set up correctly. You’ll want to make sure you remove existing sky sphere (usually BP_Sky_Sphere is default for our templates).
I (thought I) did try, Dieselhead. While I’m very experienced in I.T. and Photoshop, and somewhat experienced in Blender and Illustrator, I felt I was missing something simple.
Looks like I was, it was incredibly late last night when I posted this and I seem to have followed link that is inside link that I provided without reading whole post through! I completely missed “walkthrough” underneath that article, and somehow I’ve only read top replies. Now I feel like a dunce.
Thanks for your suggestion, I can’t believe I overlooked that. I’ll get onto trying that now combined with replies below, and I’ll post again if it doesn’t work out. Sorry to waste everyone’s time, and thank you kindly for replies!