Lee you will also have to occupy the home for a number of years or pay a penalty. DP2 was being generous sometimes there are tens of thousands of dollars of repairs needed. Double check and see if there low cost rehab loans available with the program. It sure would be a bad thing to buy the home and then never be able to fix it because you could not get the money.
You'll need to check with the Wayne County or City of Detroit authorities. There might still be some available. Keep in mind that those properties are in blighted areas, and you'll often have several thousands of dollars of repairs to bring the home up to code.