you can use the GetTimeZoneInformation Win32 API call Arnon > >How can I tell what timezone the computer running my application is in? >Actualy, I need to know how many hours they are off from GMT (Greenwich >Mean Time), taking daylight savings time into account. > >For instance, I'm in EST and right now we're 4 hours behind GMT (we're in >daylight savings time right now. Normaly we'd be 5 hours behind GMT). So >to covert a GMT time to local time, I'd subtract 4 hours. > >