Install Windows XP on a PCI IDE Controller Card

"If you have a floppy drive, pay attention at the beginning of the blue colored windows setup screen. When you see a message that says “Press F6 if you need to install a third party SCSI or RAID driver…” at the bottom bar, immediately hit F6 key.
And insert your floppy with the drivers of the controller card.

If you don't have floppy drive follow this: howtogeek.com: resolving setup did not find any hard disk drives during windows xp installation to add the drivers to a custom windows xp cd"