M.B.
Without knowing the particulars of your credit, whats on it and how long it's been there that is a hard question to answer.
I would reccommend contacting consumer credit counseling its a free service and I don't know if they can help but they may be able to give you some resources that can. I would caution you against using one of those "we can clean up your credit" services that do so for a fee. Most of these are scams and can cost you alot and possibly do more damage that good.
Good luck to you!