I have a computer with Windows Vista Home Premium, 2046 MB of Ram, and a video-card ATI mobility radeon X-1400, processore Intel Core (TM)2 CPU T5200 1,60 GHz, 32 bit.
The version of Celestia I try to run is Celestia 1.4.1.
I have the same problem with a same configuration exept dual-core 7200 ant a ati 1750 on a laptop azus.
Windows vista refuse to run catalyst drivers and celestia don't' run properly (catastrophic)
My "old" 2400XP is realy faster (1.5 mb)
Vista with 2 mb memory is too short this os require munch more memory than XP. Windows Vista Basic can use 12gb of memory and 128gb for others vista version.
I'm a computer 's dealer and i have any computer in my store with 4 mb of ram. (La Fnac first PC dealer in Françe)
Lot of people return their vista computer in Fnac and ask for Windows XP.
Since Yesterday you can try ATI-catalyst new-driver , they said that there it is fully vista compatible......try it
Linuxman