i collected my med/lost wages/pain and suffering from my carrier under my uninsured motorist coverage. we did a negotiation of what the amount would be and settled without an attorney (though a free consultation with a personal injury attorney provided me with a ball park estimate of what number was reasonable).
one thing to consider in settling yourself vs. using an attorney-with auto accidents the going rate for an attorney is 1/3 of the pain and suffering portion of the settlement PLUS their expenses which includes every fax, every letter, every photocopy, and if they get into requesting detailed letters/reports from treating doctors that can add several hundred per letter/report. if it's a relativly minor injury with no long term ramifications medical treatment/pain and suffering wise you can end up ahead just making a reasonable settlement offer yourself.