I wanted to reply to the first post-- there seems to be serious confusion about the GRE scores in the previous response. The 310 cut- off thing is based on the OLD scores, which range from 200-800. The new scores go from 130-170. It would be impossible to get a 310. I really don't think they care about the math score much. I've heard that programs look at your total score, but that is mostly aimed at more math based programs. Engineers need to be able to comprehend and analyze what they read, but English professors aren't required to know how to find the area of a triangle or evaluate spatial relations ( unless you do space theory, I guess). So, 168 is a pretty solid verbal score. The writing score is kind of a joke--If you wrote a decent theoretical analysis the readers probably wouldn't even understand it ( I think the programs know this as well). And a 3.7 UGPA isn't bad, either.
You are definitely qualified for any graduate program available. The problem is many ( maybe even most) qualified applicants are rejected. So, your writing sample, LOR's and MOST importantly, your area of interest, focus and "fit" with the department are what will make the difference.