I imported a column of dates, some of which have a leading zero, like 09/21/2011. Since other dates don't have a leading zero (11/11/2011), the column doesn't sort chronologically. The various options in Text To Columns didn't work for me. Then I tried my old standby- copy and paste to Notepad, then back into a new (unformated) Excel column. Notepad rocks for getting rid of all formatting, allowing Excel to interpret the raw text correctly