To read more on the Fed's plan, check this out: http://online.wsj.com/article/SB126291088200220743.html
To read more about the first time home buyer's program, check this out: http://www.federalhousingtaxcredit.com/faq1.php
As mentioned in the Fed article, interest rates have risen this month. It's not like we're at a 10% interest rate, 5.25% is still pretty good ....but it's good to keep in mind what factors may influence the rate in the near future.