Hi Diane,
When you say time display on the "synch" display, do you mean the "Method Integration Engine for Use with QuickBooks" window, that comes up by right clicking on the little m, in the system tray and selecting 'Display'? I just tried changing my time zone to Central and the time reflected in the engine showed Central time. Keep in mind, I closed out of QuickBooks, made the changes to 'Date and Time' under Control Panel, reopened QuickBooks and then I opened the Engine by following the steps above. Please let me know if you're referring to another window / place in Method.