I have a big problem with my old M3438G, I'm trying to upgrade the 2 HDDs to 500 GB, but I can't get the RAID to recognize them

I saw another thread in here regarding the same problem, where they closed it off as a problem with the power usage...
In this case the new HDDs actually use 0,5 mA less power than the old ones.. so that dosen't seem to be the problem

I've updated the BIOS to 1.10C, apparently the newest availible :S ?
Could this be a jumper problem, or how does that work with SATA drives :S ?
Can anyone help me with this, would be greatly appreciated !!

Best Regards,
Christina