Amend tax return? (refund, income, cost, IRS)

[Fields of Green]

I already filed my taxes, received state refund, feds accepted my return the other day and say that refund will be direct deposited next week. Yesterday I received a tax form from another employer who I worked for briefly. I thought I had quit at the end of 2009 but I must've worked for them about a day into 2010 because it states I received $200 in income and the correct amount of taxes were withheld. I don't want to confuse the IRS and delay my refund so after that is complete, do I go into Turbo Tax (that's what I used to file), add that employer and income, and then they'll ask me to send them a few bucks to cover the $200 in income, or what will be the likely next step? Thanks.

[TKramar]

An amended return cannot be e-filed, you would have to print out the 1040X and mail it in wherever you would normally mail your return, depending on your location. Good luck, I just did one of these for someone yesterday, and it cost them over $1000 (overpayment).