From PC Life:
The PC Life 2000 patented Y2K date management system controls compliant and non-compliant Real Time Clocks (RTCs) to provide complete Year 2000 (including leap year 2000) compliance for the Operating System Calendar / Clock of your PC.PC Life 2000 also enforces Y2K compliant System Date Formats, critical in maintaining Y2K compliant data and applications on your PC. You may be surprised to know that Windows accepts almost any kind of date formats, including completely non-sensical ones such as y-y-y. PC Life 2000 ensures a sensical as well as Y2K compliant date format. You will notice that explorer will show 4 digit years for its file dates.PC Life 2000 intercepts and analyses date changes on your PC. If date change ranges are exceeded they are disallowed, otherwise, users must log a reason for any date changes.