I am new to this site and I would like to upgrade my hard drive. I'm not sure that I should attemp this, so I have a few questions to help me decide. The computer that I would like to upgrade is a Sony PCV-RZ22G, Pentium 4, 2.40B GHz, 80 GB (partitioned 14 GB/ 60 GB), 1024 MB, Windows XP. I...