Raid 5 with Vista Ultimate x64 on non Raid drive... No boot disk detected!

Hello all, , great forum

I have a problem
Just finished building my new workstation
I have
1x 250GB SATA drive on wich I want to install Vista Ultimate x64
3x 500GB SATA drive wich i'd like to have running in Raid-5
Asus P5E motherboard
Q6600 core

My first take was this
1) connect all HDD'
2) Install vista on 250GB drive, leave 500GB drives alone for now
3) Update Vista
4) Restart, enable RAID in BIOS
5) Ctrl+I at startup, setup RAID-5 with the 3 500GB HDD's in RAI
manager

So far so good....
RAID manager shows RAID-5 correctly and shows that 250GB drive i
non-raid

6) Reset, problem: no startup *"No bootbable drives found"

In BIOS, it shows all drives under boot devices, and the 250GB drive a
the first boot disk
But before the 250GB name it sais RAID also, wich I guess it shoul
not..

What am I doing wrong

--
ThaClow

*Workstation*: Lian Li V2100 B Plus II Black, Asus P5E , Intel Core
Quad Q6600, Arctic Freezer 7 Pro, 250 GB, 3x 500 GB, Tagan TG480 480W
GeForce 8600GTS Silent, 4096 MB DDR2, Vista Ulitmate x64
*HTPC:* Sliverstone LC-11, Silverstone 300W-SST-LC11, MediaPortal
Windows XP Pro, AMD Athlon 64 X2 3600+, MSI K9AGM2-FIH, 2x512Mb DDR2, 2
320GB, Club3D HD2400 Pro, Floppy FireDTV-C, AC CPU Freezer 64LP cooler
CM Ultra silent Casefan.