Charles, >What, if anything, has to be done after replacing the PRAM battery on a MAC? Nothing at all, if you have the Date/Time set to update automatically. The first time you start up after replacing the battery, the system will go find the correct date and time. If your Date/Time System Pref is NOT set to set date and time automatically, then you would need to go reset them. As far as I know, that's all that might need correcting after replacing the battery. Daly ----------------------