I need help, can someone out there tell me why Seagate Inc. Posted jumper settings for all of there older HDD except the stupid model ST31? I'm doing a favor for a freind to see if we can get his older than dirt computer jumpstarted. Isent him out to buy a few new parts, and I repaired the CPU fan, and installed and older stlye (the Seagate) Harddrive, but the jumper settings we're wrong, and they don't tell you what size jumpers to use. maybe some of you worked with the older models, because most of this was before my time, I have no past experience to rely on when it comes to setting this thing up. Ayuda Por Favor?