Try hitting the Change Calendar settings, Click on the date tab, then make sure the short date is 3/9/2009, long date in Monday, March 09, 2009. Make sure the format is M/d/yyyy. make sure first day of the week is Sunday
Click on the time tab and make sure the short time is (whatever your time is in this format: 2:48PM. Long date should look like this 2:48:57 PM.
Under Time Formats, short time should read h:mtt:
Long time should read h:mm:ss:tt
AM symbol is AM
PM symbol is PM
Also, check under Regional Options to check the formats are the same.