Thanks for getting back to me.
I'm going to destroy the RAID set up, I have all my files back up on a server!
I was just a little confused about disconnecting the HHD's, before connecting the new SSD! I did not want to disconnect the HHD's mine are a little fiddly to connect!
So! I delete the RAID set up, connect the new SSD, load windows, reboot, set up new RAID! Sorted! 0_0
thanks for your help