Check that the SATA ports are enabled in BIOS.
Check that the cables and power cable are plugged in.
Does the BIOS see the DVD?
Are you using SP2 on the XP?
Can you hear the DVD spinning up when you power on the PC?
Thinking about it you may need a driver for the SATA. That seems like quite an old motherboard. If drivers are required they should have come with the mobo. Check on the websitre for up to date drivers