Worked: http://forums.hexus.net/hexus-hardware/112584-how-enable-ahci-raid-mode-without-reinstalling-windows-p35-ich9-ich9r-3.html http://www.wegotserved.com/2008/07/03/how-to-create-a-slipstreamed-unattended-windows-home-server-installation-dvd/
Links, commands and settings I someday probably won't find again