Thanks for all the help on the HD I went with the Seagate 750GB 7200RPM w/ 32MB Cache. Now I have another prob. The optical drive he has is not sata but it has a read speed of 52x CD and 16X DVD & 2MB of Cache. I wanted to update to SATA but all I can find is speeds of 48x & 16X w/ 2 MB of cache. Now again I'm not very bright when it comes to this kind of stuff but I'm trying to learn. For gaming purposes which do they use CD or DVD and which speed should I be more concerned with. Thank you again in advance!