haha yeah seeing as youre not even sure how good you are its difficult to recommend a frame
its really helpful to demo because what racquet you like is big time personal preference, for example what would seem like the most expensive/top of the line Wilson racquet would be the BLX SixOne Tour (Federer's supposed racquet) but i can tell you that even most seasoned players may not enjoy its lack of forgiveness
the best thing to do would be to do some research, demo if you can and then buy something you feel is right
check out this site it was really helpful when i was trying to learn about racquets a few years ago:
http://www.tennis-warehouse.com/LC/