Qosmio G20 and Windows 7

Hi there,
I've got an old Qosmio G20-115 that uses the RAID controller for the two hard disks. I've tried installing both Windows 7 (RC1) and Windows Vista but I'm always getting stuck at the point of Windows installation detecting the hard drives. After reading various reports from this forum and other sources around the web, I've tried on numerous occassions to get the installation to detect the disks using drivers from various different sources but to no avail.
Is there something more fundamental I'm getting wrong? What should the RAID settings be set to in the BIOS when trying to install an OS? Has anyone managed to get Windows 7 (RC1) working on their G20? Has anyone got some drivers that they've tested and managed to get Vista/Windows 7 onto their G20-115s?
Any help or suggestions would be appreciated.
Thanks in advance.

Hi Boarder,
Thanks for your reply. The G20 is old, but the hardware (aside from the RAID controller) is still very generic isn't it? Is there a specific piece that won't work with Windows 7?
List of drivers I've tried so far (both XP & vista)
All to no avail. I've even tried installing Vista but keep getting the exact same issue - none of the drivers seem to pick up the hard drives.

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