I want to become a college professor, but I'm doing badly in school!!?

Many grad schools won't consider you without at least a 3.0 GPA; anything below that is failing in grad school, and grad school classes are much harder than undergrad. You didn't mention what field you're going into - you need a PhD in a particular field to teach it, and some fields are far more competitive than others. For the sciences, you'll need to get some good research experience to have a shot at a decent grad school even if you do have a high GPA - low GPA and no research experience is a killer for applying to grad schools. And the level of the institution you earn your PhD at determines where you might get a job - that level or lower. You're not going from the University of Wyoming to get a job as a professor at Harvard. It's very hard to get a faculty job even if you do have a PhD and a ton of research in your field - less than 5% of PhDs in some fields get a job as a professor. This might not be the best choice of careers, but if it's really what you want, keep working on your GPA.