Insert SQL command with Datetime in MS-Access
Solution 1:
Date & Time input in access use #, since access can't do auto conversion from char/text into date or time in SQL Query (or access call it query), and you better use international standard for inputting date time which was YYYY-MM-DD HH:NN:SS (4-digit year, 2-digit month, 2-digit day, 2-digit hour, 2-digit minute, 2-digit second)
so for 4/21/2009 2:25:53 PM use #2009-04-21 14:25:53#
or if it still fail, you can use #'2009-04-21 14:25:53'#
Edit: Above might be working if you enable ANSI 92 or using ADO/OLEDB as database interface, thanks David for pointing out
I suggest you use YYYY-MM-DD HH:NN:SS format and try it with single quotes (') before use # like i said above