I have windows vista 64 bit and I want to install windows xp and my hard drive is in raid mode (Stripe) but I need it in ide but the sata controller mode is in raid mode in bios (grey colour) and it can't be changed so how do I convert RAID to IDE? (my computer is packard bell Ixtreme X6618). Intel core 2 quad 2.33GHZ, 4GB DDR2, nforce 730i, NVidia GT 120, Seagate 640 hard drive, motherboard model FMCP7AM, BIOS Brand: American megatrends.inc, version: R01-A3 date 08/20/2009