|If I understand your current setup you are running 2 IDE drives and 2 SATA drives. |
Are the SATA drives properly identified by both model and FULL capacity in the POST screens at start up? If so, then all you may need to do is to install the SATA controller drivers.
I assume you still have WinXP with at least SP1 installed on one of the IDE drives. Boot into WinXP and install the SATA controller drivers and reboot.
If your SATA drives do NOT show properly in the POST screens at start up there could be many reasons. You may need to Enable the SATA controllers in the BIOS for one thing. You do have power connected to the SATA drives as well as the red data cable?
I forgot to mention that the drives will not show in My Computer until they have been partitioned, formatted and had a drive letter assigned. Look in Disk Management to see if the drives appear there.