Credit Repair Companies

Is there any reputable companies out there that can really repair your credit? I have been checking some of them out but find myself very leary of a rip-off. My discharge was about a year ago (chapter 13) and have 3.5 years to go. I've gotten a copy of my credit report and it has alot of errors as far as the bankruptcy goes, ("foreclosing" on a vehicle that is in the plan is one example). The last company I checked out was $79 to start and $39 a month thereafter to start repairs. Has anyone had any good come from one of these companies?

I've heard you can do everything yourself. I found http://creditboards.com to be very helpful.

Do they pretty much tell you what to do and how to do it? I have been thinking that my wife and I would do this ourselves, thank you for reinforcing that thought. I will try the websight you gave me. Thanks.