The Universer RPG has a yahoo group http://games.groups.yahoo.com/group/Universe_RPG/
They had a good 3D XYZ map in their files section.
I have software called Astronsynthesis - provides a good 3D map and you can move around it on the screen during a game. And you can import most XYZ data or star maps.
They also have the Kepner data set that you can import into Astro 2 here - http://www.nbos.com/download/download-astro.htm
I've got this and I think it's quite a good piece of software. I was one of the testers for the 2nd version.
David