Ok you need to restart your computer. On mine, I have to hit Del as soon as the PC starts to enter BIOS setup. It depends on the mother board, it could be F5, F7 or F8 although they are more commonly for starting in Safe Mode. If you've never been into your BIOS before, you'll recognise it by menus at the top such as Main, Power, Advanced etc. On my Asus board, it's in Advanced/Onboard Device Configuration and Parallel Port should be enabled if you're using a non-USB printer. Don't forget to Save and Exit. The pareallel port is the large printer connection that non-USB printers use.
BIOS is the software that's built into your motherboard and tells your PC what to do before Windows is loaded.