|I understand the hard drive hasn't failed yet, I'm talking about the steps you would have to take in the future to get the new drive to work.|
" I also want to clear up the memory on the hard drive so the computer could run faster."
Hard drives don't contain memery (sans the cache memory but that not what we're talking about here. Filling up the hard drive with data doesn't make your computer run slower. RAM memory and hard drive space are two totally different things.