Just put your OS on the RAID not bother with ghosting as there is no need. I am running RAID and everything runs fine with me.
Originally Posted by RonindeBeatrice
You can install clean from just the upgrade media. Just use the upgrade media to install as usual, don't enter a product key, and uncheck "register automatically when online", then when Win7 loads up run the upgrade from the disk (while in Windows) and enter your key then.