I am a bit confused! what jumper on motherboard? All you should have needed to do was connect a Sata data cable and a Sata power cable. I am assuming all your motherboard drivers are installed though that would not affect the BIOS.
XP also has a thing about Sata,I think it is necessary to slipstream the Sata drivers into the XP installation disk. I am not sure I have never done it.