I'm honestly surprised at how few space combat games there have been the last couple generations, at least the twitch factor ones similar to Colony Wars. Star Wars Battlefront has ship-to-ship combat, but as part of a larger overall package. Where's my new Rogue Squadron, my new Wing Commander, my new Colony Wars, damn it? :)
While it's true you aren't very likely to just stumble across WSPC in your local retro game store, a quick trip to eBay or Amazon can score you a copy very quickly and cheaply. And unless you hate your daughter, I must recommend against purchasing Cube Frenzy for her. It's seriously that challenging. Remember, our children will one day choose our nursing homes...we want to make sure they stick us in a good one. ;)