setup did not find any hard disk drives installed on your computer

I am attempting to install sbs2003 r2 on a Fujitsu-Siemens TX150 S5 machine. The server start which came with server does not support sbs 2003 r2 and I am waiting for a updated cd from Germany. I have tried installing manually using the raid driver which was recommended by Fujitsu-Siemens and after pressing F6, Choosing the driver and continuing with setup I receive the follwing message:setup did not find any hard disk drives installed on your computer. I have checked with Fujitsu and they have confirmed to me the disks are setup correctly in the bios and I tried several other drivers but with no luck. Anyone experianced this before? Any suggestions?