I have a bad credit history and would like to buy my first home?

I am currently witha debt management company because i got into some trouble at 19 with debt, i am now 22 and would like to buy my first home however i need a mortgage which is 100-110%, as the start up costs are nearly as bad as the mortgage themselves, or an alternative is a mortgage where any start up fees etc can be within the mortgage. Can you point me in the right direction.