Research the process of credit repair services and also the firms offering such services. There may be many such firms and to short-list few, it is better to go through their offers and also follow up on the references that they provide.
http://www.ftc.gov/os/statutes/croa/croa.shtm
http://www.georgia.gov/00/article/0,2086,5426814_39039081_39271650,00.html
