Actally, are you installing on a hard drive connected to the ata100 controller?

If you are, you have to load the ata100 drivers as a scsi device ( Press F6 when the setup program is loading all of the SCSI drivers, ie. Compaq Array, Adaptec, etc.).

Once the drivers are loaded, win2k will see your hard drive. From then on out, it should be a standard install.