I liked Dark Omen with 3Dfx so much, perhaps GOG can make my dream true ?

As in Warhammer: Dark Omen? (It's usually as plus to state the full name of anything you reference when posting on a support forum.)

I believe you want to be over here:

https://www.gog.com/wishlist/games#search=dark%20omen

edit: That's where requests usually go. They stay outside of the forums so that they can be tracked.

Hope this helps