Good morning thomas.l.murphy and welcome back
I have been going through the manual for your MoBo and the raid set up is pretty straight forward and the manual is very nicely written
How are going to load the drivers for the raid controller "Floppy" or USB thumb drive?
If you are going to use a USB floppy don't forget to put the floppy drive ID on to the floppy disk in the text file.
If you are going to use a USB thumb drive just put the DVD drive in and look in the middle top of the main menu for "Make Disk Menu" this will make the Raid / AHCI drivers.
Also looking at the manual the (non-opitcal) raid drives should be plugged into the 2 left hand side (Grey) sata ports going off the manual (E1 & E2) the driver you will be looking for this set is the "Marvell 91xx Sata Controller"
Then build the raid array in the bios.
Plug in the USB thumb drive (I am assuming you are using a thumb drive) and put the W7 disk in and
1. During the OS installation, click Load Driver to allow you to select the installation media containing the RAID driver.
2. Insert the USB flash drive with RAID driver into the USB port or the support DVD into the optical drive, and then click Browse.
3. Click the name of the device you’ve inserted, go to Drivers > RAID, and then select the RAID driver for the corresponding OS version. Click OK.
4. Follow the succeeding screen instructions to complete the installation.
Then when it is done you should be able to continue the W7 install and all should be good.
Now if you want to build any other raid set's you can do them now. Just remember the driver you will need has to match what sata ports that you plugged the drives into. So lets say the next set you want to use is the Intel ports then you will need the IRST driver for that raid set
Also it is totally up to you but the system drives you may want to set for raid 1 (mirroring) this way if you loose a HD (goes bad) you buy another HD and tell the raid array to rebuild it self no OS installation needed. I know that you bought the HD's in pairs so you raid 0 for performance but this was just a thought that if you run raid 1 you have redundancy (no down time).
Hopefully this helps you, Mike
PS When ever I build a system I always start with the lowest port number (0 & 1 or 1 & 2) for the OS then add from there.
Also just in case this may help you on deciding on what raid you want
http://www.thegeekstuff.com/2010/08/raid-levels-tutorial/