I have just been given a G4 Powerbook by my son - I used to use a Windows laptop but it died. The problem is that I'm an amateur astronomer, and I used my Windows machine with a planetarium program to control a telescope. Having tried to download a couple of planetarium programs, I find they won't run on the Mac because it has only 8mb of vram. Is there anything I can do to increase the machine's video capability, or is that it? Not having had a Mac before, I'm amazed that it's reputation as a superb graphics machine is compromised by a measly 8mb! I don't think I've ever had a machine with such a low graphics capability - even my first desktop, a 286, had 32mb!