I think you're loading the drivers incorrectly. Once you have them on the floppy you don't copy them anywhere, when you get to the screen in the installer where you pick the drive to install to there should be a button which allows you to select another storage controller driver. You need to hit that then put the floppy in and tell the installer to use the drivers on the floppy.
I'll take you through the way I'm installing ...
I've gone through selecting the windows version, accepting license terms then click on Custom (advanced option)
Then comes to a window asking where I want to install Windows.
Below this question are my 2 drives.
Disk 0 is highlighted as default.
If I select Disk 1 then a message appears at the bottom: "This computers hardware may not support booting to this disk. Ensure the disks controller is enabled in the computers bios memory.
There are 3 options to click on:
Refresh
Drive Options
Load driver
I click on Load driver.
I then click on Browse and point to the floppy
Windows scans for a bit then there's a file NVIDIA nForce RAID Controller (A:\nvrd32.inf) that is selected as default.
I click Next
Windows reads from the floppy and I assume loads the driver. Grenn bat progress at bottom of the screen then it takes me back to the Where do you want to install screen.
I click Next.
I get a message saying that the Drive 1 is not valid but there's enough room on Drive 0.
I carry on with the installation using Disk 0, eventually reboots and says missing operating system before hanging up.
Also, in the Bios screen where I choose the Hard Disk boot priority, the only disk showing is SCSI-0: NVIDIA STRIPE 138.49G. Does this sound right?