9.0 doesn't support the HPt37x controller natively with the 2.4.19 Kernel, you need a compiled kernel to install. I tried this but gave up as my USB mouse kept dying.
The 2.4.20 Kernel does support the HPT37x and 9.1 is using the 2.4.21 Kernel so if you feel brave enough you could download 9.1 Beta 2.
I have done this myself but still can't install it onto my system as it doesn't like my partition tables for some reason....