I bought the first bare-bones MacBook because it was all I could afford, and now the storage capacity, 80GB, is nearly gone. I have a small, 100GB external drive that I'm using as the Time Machine disc. I looked into reformatting the external drive simply to back up files I don't need on my laptop. Unfortunately, going through all of my files this weekend, I've realized that I really need everything that's on there. So it seems I need a larger internal hard drive. What brand/physical size/type do I need? I'm looking to at least double the disc space or go for 200GB if one is made that large for a laptop. Is it difficult to do the replacement myself or should I have someone do it for me? Thanks in advance for any advice or information.