This forum is closed. Thank you for your contributions.
Did you note that this is the Training and Certification forum?
That said, you might want to post your question in the appropriate Answers for Office forum with a LOT more detail. http://answers.microsoft.com/en-us/office/default.aspx#tab=1
You can try the right forum as Charles sugested or just try Ctrl + Z (Undo)
Hope this is helpful.