I know of all the problems concerning setting up Vista on a RAID
partition, but I'm concerned with Vista (already installed on a non-
RAID disk) just seeing a RAID-0 array used for storage from within
Vista. I am using a nf4 AMD board and disk management just sees the
two disks, labels one as raw and the other as unallocated. I know
nvidia doesn't have any official drivers yet but I thought Vista has
internal drivers for nvidia RAID. Any reason Vista cannot see this
hardware RAID-0 array?

I figured it out.

Vista was seeing the IDE controllers as generic and assigning the
generic Vista drivers to the controllers.

I downloaded the latest XP drivers for nf4. I went through device
manager and updated each controller that said Standard Dual Channel
PCI IDE Controller and went to "Browse my computer for driver
software" then "Let me pick..." then I went to "have disk" and
manually went into the IDE folder of the XP drivers and went into the
sata_ide folder and used the .inf in there to install the IDE
controller. I did this for each one and then my RAID drives appeared
as they should.