I'm having the same problem everyone else seems to be having. I've installed it on a Toshiba A75, great laptop. All I get in the programme are lines where the constelations ought be. I can zoom, and do pretty much anything I want but see the pretty pictures, which is why I downloaded the programme in the first place.
I tried going into windowed mode, but that was no help to me. I have an ATI graphics card with 256 dedicated ram for it, along with a P4 3.06 with 1.5 gigs of ram.
I also noticed the programme takes 100% of the processor, while pretty much ignoring the ram I have.
Anyone who has any possible solution, it'd be great, because when the BF put it on his computer, I fell in lurve! It's so pretty!