I am an older lady who has been using computers for many years.. however, I'm not too familiar with the "innards", I would like to install a second printer port, and would like step-by-step instructions. What kind should I buy? Price? and is it as simple as just putting the card in the slot and turning on the computer? Is there software? Would a USB port be preferred? This question is very easy for those of you who know how to do it, but I'm hesitant to try it without some input.