C drive - 1.8 TB - Windows 7 64 bit
D drive - 4 TB Raid 5 (4 x 1.3 TB Seagate drives) (NTFS)
Asus P8Z68-V Pro Motherboard, Intel Rapid Raid Technology / motherboard
I updated the bios and during the reboot missed hitting 'del' to reset SATA controllers from default (ACHI) back to RAID. I "think" it was already too late because during the booting sequence I noticed the intel raid / disk configuration said 2 drives are not members of the raid and two are. I hit reset and set the SATA back to raid but that didn't really do anything it would appear.
I found several references which talks about testdisk and the possibility of rebuilding so you can move off the data and rebuild. However, I'm not sure of the steps. Some topics talk about disconnecting and order of drives but that doesn't apply for me. I've not disconnected anything actually and I've not recreated the raid array. I did, however, remove / delete the two disks that it remade into a raid and found myself here.
If there are some step by step instructions for dummies I'll gladly start there but the example confused me a bit

It sounds like I needed to recreate the raid array. I believe I used the default settings so hoping that will be ok. I do this after a reboot, ctrl-i, and rebuild the array using the 4 drives. Then go into windows and download testdisk which I'll run as admin.
After that I'm lost - really sorry and thanks for any pointers.