Driver for Dell Photo All in One Printer

hi, i'm having some drouble finding the proper driver for my dell printer. i am using a brand new macbook and my printer comes up when i connect it through my usb drive, but my mac says that i need to choose a driver or printer type. I have a Dell Photo All in one 924 and it's not listed in the list of printers or drivers. i heard that Lexmark printers are the same as dells but i don't know which lexmark printer to choose from the list or which lexmark driver to use. Can anyone help me please?