Well, I did what you said and downloaded, burned and used SeaTools for DOS v1.10 (Text) for my hard drive.
It's a Seagate hard drive, model ST3120026A, with a SiS 963 controller and a SN of 5JT4SPWV. MAX LBA 120 GB
I did both the short and long scan and the hard drive passed.
SMART is supported but disabled. Should I try to enable it in the BIOS menu?
If both scans passed, what should I do now? I'd really rather not use the erase function if I can help it, I'd like to try to salvage my files if possible.