I managed to pick up a new copy of Dominion Wars recently, although I've had a bit of trouble running it. It works on my laptop, although the display graphics are mixed up (the Badlands appear green) and it doesn't work on my PC with Vista, always coming up with an error message. I've changed the compatibility settings on both, although it doesn't appear to have worked.
Did you know that the UK/EU version was a complete nightmare to get working on even XP never mind W7....the US version on the other hand for some weird reason would run pretty well on Xp with compatibility mode....something to do with the EXE file of each version game.
As for getting it running on W7 i think its futile....i gave up on most of my fave Trek game with vista, the technology has simply moved on too much, although the funny thing is that its easier to get Dos trek games to run with the likes of VDM and dos box, than to get Trek games made for windows 95/98 and ME.