Harddrives not detected (win 64 install)

Just got Windows xp 64 the other day and boot from cd, press f6, install the Sil 3114 drivers, enter to continue, windows finds no harddrives to install windows on ><.

I'am using Gigabyte GA K8N-Ultra 9 motherboard with the Silicon Image 3114 raid driver to setup a raid 0 array which I can install Win Xp 64 on. It seems their raid drivers dont want to work (yes the 64 bit ones) during a windows installation. I'm using 2 western digitial SATA 74gb raptor drives. Anyone encountered this problem and have a solution per chance? The 32 bit drivers work fine in regular win xp pro when I was installing windows a week ago.

Specs:
4000+ 64 amd
Gigabyte GA K8N-Ultra 9 motherboard
550W Antec TRUE550 PSU
2gig (4x 512) corsair xms memory
Gigabyte 7800gtx video
Sound blaster audigy 2