As a follow up, got the new XP P4 computer, loaded Aces High from my old Win98 P2, and it works great. Enjoying much improved video and audio. I manually increased video resolution, but didn't have to make any other changes.
However, my Labtec mike volume is too weak, and I'm still fiddling trying to get that as good as it was in the old system (but that is another thread).