I too have had problems with s-ata.
The problem is RH9 as far as I know. The kernel for this distro has no support for s-ata disks. You should try a newer rh like Fedora core 2, or if you can get the help of an expert, (or if you are brave!) compile a newer kernel for you RH 9. The newer kernels such as 18.104.22.168 have S-ata support.