..so my second Hack went a lot smoother than my first, managed to get my P55 based i7 860 Dell XPS 8000 running Mountain Lion.
The only problem I had was that the installer wouldn't recognise the drives so I had to use the ATAinjector kext which got me through the install.
BUT.. I still really fancy setting up a Raid array on this one.. any advise how I could get this to work in raid mode?
The bios only has two setting.. Raid and ATA (there's no AHCI)