from irs website
Q. Will the payment I receive in 2008 reduce my 2008 refund or increase the amount I owe for 2008?
A. No, the stimulus payment will not reduce your refund or increase the amount you owe when you file your 2008 return.
Q: I know some people won’t get a stimulus payment. How do I know if I’m one of them?
A: You won’t get a stimulus payment in 2008, if any of the following apply to you:
You don’t file a 2007 tax return.
Your net income tax liability is zero and your qualifying income is less than $3,000. To determine your qualifying income, add together your wages, net self-employment income, nontaxable combat pay, Social Security benefits, certain Railroad Retirement benefits and certain veterans’ payments.
You can be claimed as a dependent on someone else’s return. For example, this would include a child or student who can be claimed on a parent’s return.
You do not have a valid Social Security Number.
You are a nonresident alien.
You file Form 1040NR or Form 1040NR-EZ, Form 1040PR or Form 1040SS for 2007.
http://www.irs.gov/newsroom/article/...179181,00.html