Hey Everyone, I currently have an iMac with 320 gigs of hard drive space. And now...there's about 100 gigs left. The thing I was wondering about is if there is an extra hard drive area inside, where I could have an Apple Store put in another hard drive. So instead of having them give me a big hard drive and make it to where they have to "flash" over all my files and stuff (where their could be failure of transfer). Thank You!