Hi
I have a dialog box containing a text box used for entering a date.
Hi
I have a dialog box containing a text box used for entering a date.

This month, every Windows Secrets subscriber can download a one-chapter excerpt of Windows 7: The Missing Manual.Windows 7: The Missing Manual provides valuable information to help you overcome these difficulties in learning a new operating system. Subscribe today to download your free excerpt.
It can't be a number, which is what you entered. Office doesn't know what that number represents, so it interprets it as a date serial value and converts that to the equivalent date. If you want to enter a date, you must use date delimiters valid for your regional settings, slashes, hyphens, periods, etc.
Charlotte