Do you have the Intel RSTe RAID driver installed on your OS drive?
Do you have the BIOS option "Display Option ROM" enabled in the BIOS?
Are you sure your SSDs are connected to the Intel SATA ports? There are non-Intel SATA ports on your board.
If you installed Windows 8 in AHCI mode, you cannot just change to RAID mode, once your PC boots it will Blue screen crash, or BSOD. You will either need to reinstall Windows 8 in RAID mode and install the RSTe RAID driver during the installation, or perform a Windows Registry fix to allow changing to RAID mode, with the RSTe RAID driver already installed. What SATA driver are you using now?
If your PC was configured correctly for Intel RAID mode, the RAID utility screen would display automatically, all CTRL I does it make it stop booting and allow you to work with the RAID utility.
You need to answer the questions I asked, and read your boards manual about how to configure RAID to learn more about it.