mmcdonal is right. But I don't think you need to go to the trouble of changing your table. Whenever you need that sort, just build fields in your query like this:
SELECT Table1.Datefld, Format([Datefld],"yyyymmdd") AS DateSort, Format([Datefld],"hh:mm:ss") AS TimeSort
FROM Table1
ORDER BY Format([Datefld],"yyyymmdd") DESC , Format([Datefld],"hh:mm:ss");
Randall J Weers
Membership Vice President
Pacific NorthWest Access Developers Group
http://www.pnwadg.org