Take a look at the Date tab in Regional Options in Control
Panel. My guess is that the two computers have their
Calendar | "When a two digit is entered, interpret as a
year between" settings are different.
This goes back to the old Y2K issues. A number of apps
(and Windows itself) kinda put off the issue my using what
some call a "Pivot Year".
If you'll look at the "Format Property - Date/Time Data
Type" article in the Help, you'll find a paragraph that
states
"Warning The Short Date setting assumes that dates
between 1/1/00 and 12/31/29 are twenty-first century dates
(that is, the years are assumed to be 2000 to 2029). Dates
between 1/1/30 and 12/31/99 are assumed to be twentieth
century dates (that is, the years are assumed to be 1930
to 1999)."
Personally, I avoid the whole issue by ALWAY forcing my
users to enter a 4 digit year. Otherwise, you're
vulnerable to what ever quirks they have on their local
PC's Regional Settings.
Hope that helps!
DS