EDIT: Just reread your request and i got the wrong idea, will leave the description i wrote as may help others...
Your drive issue as follows...
1. Plug all three hard drives into the Southbridge sata slots
2. Enable raid in the bios
3. The Raptor will still work even though not raided
4. Create an array on your other two drives.
NB: You will not get your data from the DFI created array, it will not be readable with the Intel Raid Array. You will have to back up the data. create a new array and then restore it i'm afraid.
The NF array and Intel array are not cross compatable.
This is how to get 2 x raid arrays at same time...
Ok - this tool me ages to work out
The Raid via the Southbridge consists of three sata slots, there are then two aditional sata headers in orange.
1. Plug your main raid array into two of the Southbridge headers and enable raid in the IDE setup via bios
2. Plug your other raid drives into the EZ-raid (other 2 orange slots).
3. Warning (you will loose the data on the EZ-Array if you do the next step)
4. When re-booting setup the first raid array using ctrl+z
5. Assuming you want the EZ array to be raid 0... change the jumper on the mobo as per the EZ-backup manual section
6. Go into bios and select the change EZ-backup array (read manual)
7. Reboot
8. You should now have both raid arrays, although you will not see the EZ array until in windows
Clear as mud i hope

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