Yes there are legitimate no money down options for first time home buyers. The key to researching them is the loan officer and lender you choose. Most loan officers and lenders dont offer the loans so gather up information before you choose your lender. There are a number of articles clairifying the loans and programs at Your-Road-Home.com. Also the article Consultation Interviewing Loan Officers, will serve you well. And be sure you read article #9 about the MCC Tax Credit. The best tax credit ever. The lender you choose must be familiar with MCC and file before your loan closes. Gather up all of the objective information you can find than you will have the right questions when you interview loan officers and you will know the correct answers.
Trulia is also a good source for information and when your ready you will find loan officers and real estate agents from your area offering their services on Trulia. A good source.
Best of Luck, Stephen