Excel Date Parsed as Integer

[StyleGuide]

Hi there, I'm trying to Parse the Value of an Excel Cell into its correct Data Type. (I read the excel sheet then add all cell values into an object array). Trouble is, (DateTime.TryParse(value, out newDateTime) returns false, where the Excel Value (value) is '01/01/2007', but is passed in as '39083' - an int. Now, I can't just assume '39083' is a valid date, as is could be a valid int. Any suggestions? Thanks Jon