|If you have XP as indicated in your specs, you will need to install SATA drivers for XP to recognize your SATA drives. Also, depending on your motherboard, you may also need to set a few things in your BIOS before they are recognized.|
Please also clarify that the 'old' SATA drive was not from that particular machine originally. This appears to be the case since you have two other non-SATA drives (PATA/IDE drives) that are working. Please clearly state the source of these drives, what they were used as before (except the new ones), and what the intended purpose for them is (multiple boot drives or one boot drive and the others for storage, etc.)
You have to be a little bit crazy to keep you from going insane.