My husband's father ruined my husband's credit, crashed a small business under my husband's name, help!!

My husband is very young 24 years old. When he was in high school and became of age to have credit, his dad took advantage of him and had my husband borrow loans for him. My husband was very young and naive and he didn't really know anything about credit. Well his father never payed back the debts and left my husband with bad credit. Then about the time my husband was 19, his father convinced him to open a small construction business with employees. Well, everything ended up under my husband's name soley and there were never any attempts to contact an accountant to handle the tax situation. In addition to construction, my husband's father had my husband buy and sell real estate under my husband's name. This went on for about 2 years and my husband being young and naive trusted his dad was doing the right thing and he thought his dad was taking care of everything, because my husband didn't really know anything about a business or taxes. More....