Go to the manufacturer's website, and download the 64bit driver for that printer. Yes, 32bit OSes need 32bit drivers and 64bit OSes need 64bit drivers. If the manufacturer doesn't offer a 64bit Win7 driver, I am afraid you are out of luck. This unfortunately happens fairly often. Manufacturers don't want to spend money on developing a new driver for an old printer they no longer sell. They would be much happier to sell you a new printer.