I used to work for a major insurance company in the auto claims dept. so I know all their slimy tricks. When I went into law, mostly I did medical malpractice but still did a lot of personal injury (mostly auto accident) cases.
Go to the emergency room. Doesn't matter if you think you're ok or not... go anyway. Most soft tissue injuries don't show up for sometimes weeks or even months, but if you don't go to the ER, the ins. co. will hold it against you if you don't go now (even though they know damn well it doesn't mean squat... they'll hold it against you anyway). Tell them you were involved in an auto accident and you're sore... your neck/back/whatever hurts (neck is your best bet). It doesn't take much of an impact to cause a neck injury, and insurance companies know this. Soft tissue injuries are also VERY difficult to prove false. I'm not saying you should fake injury that you haven't got, but at this point, you don't KNOW that you definitely haven't been injured since symptoms may not crop up for a long time... cover your butt. Insurance companies are far more afraid of injury claims then property damage claims, so go to the ER.
Go right now to the accident scene with a camera and take photos from every angle. There should still be broken glass, skid marks or other evidence that shows where the impact occured. Make sure you take a few photos that show the evidence in relation to the environment (i.e.: the police claim it was on private property but you say it wasn't). Photos are irrefutable evidence. Take photos of the damage to your car from all angles with close-ups. If you have to, buy one of those throw-away cameras with a flash.
Go to the police station that handles the area where the accident took place and insist on filing a personal statement. They might be a pain in the ass about this. The personal statement is an explanation of who the parties involved are, what happened and where it happened in your own words. Make sure you sign and date it. The may charge you for this, but normally it's about $10 (that's their "nuisance" fee). Keep the receipt and insist on a copy for your records.
Get an attorney. Don't worry about the cost, personal injury cases are done on a contingency basis. An attorney will be honest with you on whether or not you have a case, and if not, what your best options are. Here's a google search on auto accident attorneys in your area:
http://www.google.com/search?hl=en&ie=UTF-8&oe=UTF-8&q=auto+accident+attorney+richmond+virginia&btnG=Google+Search Pick one that has a lot of experience and specializes in personal injury cases specifically auto accident cases. Keep a copy of anything you give your attorney... attorneys lose stuff too.
ASAP write down everything about the accident like you are reliving it. Don't leave out any single little detail since you don't know what little detail may or may not be important. Include street names, other party info, damage info of both vehicles... everything. You'd be surprised at how much is forgotten even a day later.
Don't worry that the insurance company of the person that hit you denied the claim... that's standard operating procedure. They always deny a claim right off the bat if they think they can get away with it.
The area of damage to your car shows that you were hit and not that you hit someone else. Contact your insurance company and have an adjuster evaluate the damage. You'd be amazed at what adjusters can tell about an accident just by evaluating the damage. Make sure you get a copy of their evaluation.
Don't admit fault under any circumstances to anyone INCLUDING YOUR OWN INSURANCE COMPANY.
For future reference... ALWAYS have a camera available in your car to take photos of an accident scene, and absolutely refuse to move your car until you've taken photos.
PM me if I can help anymore.