I agree that you should go for a Master's program to boost your credentials. You'll also need a very high GRE score to make up for the low GPA. Did you at least have an upward trend? If you had a rough start, it's something you could address in your personal statement.
If you don't think your credentials are up to snuff after that, you could also try applying for a PsyD, but those don't receive nearly as much funding (I believe). The clinical route is very difficult - it's as competitive as med school, but with less spots.
If you're considering other branches of Psychology for a PhD, you should still bring up your GPA and get as much research experience as you can.