Research business schools and their requirements for candidates. If a school has a minimum GPA that is above your GPA, you will very surely not get in. However, some colleges do not have minimum requirements for GPAs, so you will want to do your research carefully and understand your options.
Consider taking more college courses before applying to business school. Make sure that you are taking courses that are closely related with your intended concentration for your MBA. You will want to make sure that you get the best grades that you can in these courses to help improve your GPA.
Develop explanations, not excuses, for your low undergraduate grades. You can include these explanations in your statement of purpose, however, they should not be the main focus of your statement. Help the admissions committee understand why you had low grades and then move on to discussing your strengths.
Obtain letters of recommendations from as many of your undergraduate professors as possible. You will want to choose professors who know you well and who can attest to your academic integrity and dedication. These letters of recommendation will help the admissions committee see you are serious about education.
Work in the business world for a few years to gain experience before applying to business school. Many business schools value professional experience over undergraduate GPAs, so if you impress them will your professional experience, you may find that your grades don't matter as much.