1099-INT and 1098-T question for filing purposes?

I already filed my 2009 income tax but today I received a 1099-INT and a 1098-T. I didn't know that these were going to come to me. I called the IRS hotline and they said that I'd have to file a 1040X once my income tax came in. Since the amount is so low on both of these statements would I still have to include them on my income tax? For instance the interest income is only $18.00. Please advise.