Printer drivers provide specific instructions to allow computers talk to printers. But because there are hundreds or thousands of printers available for which you have drivers installed on your machine, you don't need most of them. Your computer can often talk just fine to a printer even without specific drivers for that model of printer. And if you really do need the drivers at some point, they'll be available from the printer manufacturer's web site. Feel free to get rid of any drivers from printers you don't expect to use...it can save up to 2 GB. Or just leave them there for now and remember that you can delete them at some future date when you start to run out of space.