Would just changing the settings to prevent sleep work? I'm at work, and can't hook the new MBP up to our wireless (would be heavily frowned upon!) I'm charging now, and hoped to begin the next stage of calibration after it is charged. But I'm not going to be able to mess with it all day to keep it awake, or to download Caffeine. So, would just changing the settings work? Or should I forget about that and wait until I get home to download Caffeine?