There are two ways to do this:
1) Right click the file and click properties. On that screen will be the
"Created" date, the "Modified" date, and the "Accessed" date.
2) Open Explorer (click WindowsLogo-E), navigate to the file, and when you
find it, change the current view to "details" (click the View button on the
menu, and click details), and right click the date modified sort button (or
any of the sort buttons) and check the "Date Created" button.
-Adam.D