The readme said this:
QUOTE
When using the Load driver option during Setup, the following restrictions
apply:
* If you must load more than one storage driver during Setup by clicking Load
driver, only select one driver at a time. To load more than one driver, add
the first driver and click Next, then repeat the Load driver option for each
additional driver.
* In this release of "Longhorn" versions of Windows, you will be unable to
install mass storage drivers by using the Load driver option on computers with
less than 256 MB of memory. To work around this problem, add the additional
drivers to the Windows Preinstallation Environment (Windows PE) before running
Setup. Refer to the Windows Automated Installation Kit for more details about
adding drivers to Windows PE.
* In "Longhorn" versions of Windows, Unattended Setup does not support
additional drivers. If you must add drivers that are not supplied by
"Longhorn" versions of Windows you must perform an attended (interactive)
setup.
apply:
* If you must load more than one storage driver during Setup by clicking Load
driver, only select one driver at a time. To load more than one driver, add
the first driver and click Next, then repeat the Load driver option for each
additional driver.
* In this release of "Longhorn" versions of Windows, you will be unable to
install mass storage drivers by using the Load driver option on computers with
less than 256 MB of memory. To work around this problem, add the additional
drivers to the Windows Preinstallation Environment (Windows PE) before running
Setup. Refer to the Windows Automated Installation Kit for more details about
adding drivers to Windows PE.
* In "Longhorn" versions of Windows, Unattended Setup does not support
additional drivers. If you must add drivers that are not supplied by
"Longhorn" versions of Windows you must perform an attended (interactive)
setup.

