You name it! I have seen updated pay stubs, letters of explanation concerning non-married relationships, updated bank statements, proof of payoff of recent debts (recent credit card or car payoff). A good lender will prep you with a list of all of the items you'll need and will help you get through the process. Underwriters are very particular in the current climate and just want to make sure that you are able to comfortably afford the home and won't default on the mortgage.
Most lenders require a 640 minimum payment for an FHA loan plus a 3.5% downpayment. Typically you can get a seller to pay the closing costs for you if the house appraises. Your best bet is to call a real lender directly who can run your particular situation through their system, tell you exactly what your credit score is, what you can do to improve it, and what programs you qualify for. There are some first-time homebuyer programs that you may be able to qualify for in Prince George's County as well. Good luck!
It sold in 2006 for $300,000 even. It is now advertised for rent for $1625/month.
I can do a search for you going back farther if you'd like. What we are seeing is homes have trended downward in most neighborhoods recently so going back too far doesn't help much when looking at values. Your home should have some good equity in it as values have risen substantially since your purchase. If you'd like a comprehensive comparable market analysis, we'd be glad to provide you with one, free of charge of course.