Not all grad schools pay attention to your undergrad GPA, let you try grad school. I had a "good enough" GPA but my grad school was happy that I just had an undergrad degree. I would find an accredited grad school like that and take a basic course or two then apply where you want and "switch". Or, I would ask the program if they would take me on probation, point out that the lower grades were in "science" sorts of subject (I assume you do not want to apply to a science program :-) and that my program-related grades were much higher?