PS3 User with a quick question about screen cutoff with this game?

Hello all, im new to this game, and finally was able to play it! However I noticed that the corners of my screen are cut off, like down by the chatbar and such, and same thing in the main menu. Is there any resolve to this? I tried asking over at the gamefaqs ps3 boards, and they all said its most likely an overscan issue with my TV, and to turn off overscan and set it to just scan, however in my Sanyo 30' TV i see no option for overscan or to change any type of display setting except brightness and contrast, stuff like that, in the onscreen TV menu. All my other games fit the screen fine except for this one. Is there any way to possibly resolve this? Or know what might be causing this? Thanks in advance!!