I would rather answer How to enable Smartdrive.
In your Windows 98 cd you can find an .exe named "smartdrv.exe". Copy this to the hard disk. Execute this file before starting your installation of Windows Xp.
For e.g. : E:\smartdrv [Enter]
If you execute this twice, you will see a confimation table.
After this start installation of Xp as usual.
( I would appreciate if you post in
QnA section next time )