Whether or not this is taxable income for your 2009 tax return depends. Independent contractors can opt to pay taxes on a calendar year or a fiscal year. If you have already opted calendar year, you will pay taxes on this income when you file your 2010 taxes. If you are running on a fiscal year, you will pay taxes for whichever year it is to be included (depending on when your fiscal year ends).
You can find more information about this in Pub 334, on page 12, located here: http://www.irs.gov/app/vita/globalmedia/p334.pdf.
Please let me know if I can assist you further.