I'm a similar position; I graduated in 2009 with a 2.26 overall GPA. There were many reasons, primarily health and personal issues; in retrospect, I wish one of those reasons was that I was actually partying every weekend instead of studying!
What you need to realize is that it's possible to get into a graduate program, but it will be a lot more difficult. You may have to employ some nefarious tactics and use back-door approaches, but if you're serious about it, you can do it.
First thing: do well on the GRE. Take subject GRE's as well, and do well on those. That way you can say that your undergraduate performance is not reflective of your true abilities. Also, think long and hard about why you want to get into a graduate program and what your goal with it is. That way, you will sound a lot more resolute when you write your applications.
Also, you can ask yourself what kind of coursework might help you with that end-goal: look into non-degree seeking programs, and do well in the courses you take! If you can show a trend of improvement, it might move your application from the "NO" pile to the "Maybe" pile.
Be patient though. It may be worthwhile to work in industry to gain some valuable experience. To quote a professor at my undergraduate institution that I e-mailed: " I think that the general impression on admissions committees is that applicants who have spent some time in industry have a better sense (on average) of why they are in graduate school, and tend to be more focused."
EDIT: Let me also add, don't put your GPA on your resume (you DO have a resume, right?). Learn how to nail interviews. If the question of your GPA comes up, don't try to blame anyone else for it because it will look like you aren't accepting responsibility or haven't thought about what you could have done better (and there's always something that could have been done better). Instead, say something along the lines of, "I'm not proud of my undergraduate record, but I don't think it accurately reflects my knowledge or abilities. Looking back, if I could change something I would...blah blah blah." Good luck! Be patient and good things will come your way.