No, you cannot add this amount to your 2009 Tax Return. I suggest that you review your 2007 Tax return to see if you had any of this income included in your Schedule C.
Now, if you did not include any portion of this income on your Schedule C, then I strongly suggest that you amend your 2007 tax return on account of the 1099-Misc income that you received recently. Failure to file an amended tax return may result in substantial IRS penalties and interest.