Hi peter, I have a pentium IV with win98 and anything goes well with glGo but I love my 12' Powerbook G4 with OSX panther 10.2 I dowloaded full version 0.1.1 of glGo and I put it in my Application folder, but when I double click on it, it seems to launch, I see the squares that appears but nothing more, no messages, no icon on the dock Thanks, G=E9rard