If you owe the IRS from last year, 2006 will the IRS take my check this year.?

I live in Ohio and i do not know if this varies from state to state but i am getting ready to file my taxes and i am anticipating a large refund. I however, still owe the IRS from 2006. Will they know about my refund and Can i expect them to take it or hold my money? Do they have a way to track this if i get one of... show more I live in Ohio and i do not know if this varies from state to state but i am getting ready to file my taxes and i am anticipating a large refund. I however, still owe the IRS from 2006. Will they know about my refund and Can i expect them to take it or hold my money? Do they have a way to track this if i get one of those instant refunds? I am making payments but i could really use the money for other things. Please let me know.
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