Can't get Mogul to travel Local Time

[JuniorRedDog]

Does anyone know how to get the Mogul to change it's time to the local time, depending on where it's located. I do a lot of traveling and many times I go to sleep in one timezone and wakeup in another. I want to have my Mogul change it's time when I enter a new timezone so that when I set my alarm it will wake me up on the local time. I'm pretty sure they get this time from the radio towers but the mogul seems to set it's time from the internet. I've tried combinations of turing off the auto update feature but it doesn't seem to have any effect on my problem. I had a Treo 700wx before I got the Mogul so I know it's possible on a windows device but I can't figure it out on this one. Can anyone help me?