There are many credit reporting software's out there, in addition to companies that charge from $100 ++ to remove from 1-2 items a month, or negotiate with your creditors. But what I did was I got Credit Versio for $19.99 a month and they listed the account numbers, dispute reasons, and wrote out letters for me that I could print out to dispute ALL of my credit items. If you know your account numbers, here are the addresses to Experian, Transunion, and Equifax.
Experian: P.O. Box 4500, Allen, TX 75013
Equifax: P.O. Box 740241, Atlanta, GA 30374
Transunion: P.O. Box 1000, Chester, PA 19022