1098 Form

I have already filed my taxes this year and it has been accepted by the IRS. Unfortunately after all is said and done, I receive a 1098 form in the mail for a time share I have. Do I need to amend my taxes? If so, how do I go about doing it? Can I do it on Turbo Tax? Any idea how it will effect my return? Increase it? Or will I most likely be paying some money back? Please help.