Capital One

I am trying to have a good credit score. Unfortunatley, my credit isn't the best because of a Capital One credit card that I got when I was in high school. The account is closed, but money is still due on it. My goal is to get my score into the 700's ASAP. This can be done by resolving the Capital One account, keeping my current HSBC credit to a minimum and maybe getting another credit card. It's important to check you credit report yearly. The three credit scoring agencies offer free credit reports once a year. I definitley want good credit because I eventually plan to purchase a home. Mortgagae rates differ significantly in regards to credit ratings.