I hope this helps.
There is a Federal Tax Credit, for up to $6,500, for homebuyers who purchase a home between Nov. 6, 2009 and April 30, 2010. To qualify, you must have lived in your current (or previous) home for at least 5 consecutive years out of the last 8 years. There is no requirement to sell the home you have been living in--just the requirement that you have been there for at least 5 years. The IRS has a website that has lots of info. Go to http://www.irs.gov. Good luck!
If you owned a home and lived in it for five consecutive out of the last eight years and now bought a new primary residence, you are entitled to the lesser of $6,500 or 10% of the purchase price of the home-regardless of whether you sold the original home or not.
You may refer to the website for further information. Please let me know if I can assist you further.