I have managed to get someone inside Microsoft interested in the problems of the old MS-DOS convention of keeping the RTC in some local time that is not further specified in the CMOS RAM data. I was asked to write up a case to convince Microsoft management to dedicate resources for fixing this and enabling the Windows RTC driver to maintain the battery clock in Universal Time instead of local time. I just did so on http://www.cl.cam.ac.uk/~mgk25/mswish/ut-rtc.html and I would like to invite all computer time gurus out there to review this brief essay before I send it off to Redmond. Please let me know if you have any further - arguments - technical suggestions/proposals - related references - URLs of well-documented RTC DST problem stories that you think that whoever at Microsoft touches the Windows RTC code next should be aware of. Cheers, Markus -- Markus G. Kuhn, Computer Laboratory, University of Cambridge, UK Email: mkuhn at acm.org, WWW: <http://www.cl.cam.ac.uk/~mgk25/>