Install went ok
left "display readme" and "start celestia" boxes checked.
The instant Celestia's window appeared, the system locked up. Front panel power button didn't work.
The only way I could get it to respond was to unplug it from the wall power and plug it back in again.
System:
256 MB, 2GHz P4, Windows NT4 SP6A
32MB ATI Rage Pro 128, OpenGL v1.2