From what I have been told. This tax credit will be given back to you in 2010 as a refund. You may ask your local tax advisor for more details, but from what I have read so far this will not truley affect you till 2010.
Since you are closing on a home soon, does that mean you have already found a place to buy or are you hoping to close by than? If you have looking and not working with a Realtor you should call me so my team and I can help you with the purchase and explain all of your options.