After reading the Tips & Tricks you kindly posted, I got it to work and Homeworld now is as fabulous as it ever was.
If you don't mind, a few comments you may add to your helpful article;
For those who like me haven't been around a Windows box for over decade:
- regedit is a command you can type in after double-clicking the 'Run Command...' icon, it will run the regedit app
- a maximum of 1600 horizontal and 1200 vertical is supported
- you must set renderer to 'd2d'
- don't be alarmed when the intro movies for 'sierra' and 'relic' no longer play
- this works on the 1.00 version (original disk) and 1.0b5 versions