Since these are 'new' drives, you will need to get the latest drive files from Roxio to have Easy CD Creator function with the drives.
Support for new drives is one of the main reasons for CD software updates.
If you have Easy CD version 3 or 4,you may have to upgrade to version 5 to support these new drives.
Plextor is correct that you do not need a driver for ANY CD drive under Windows (except 3.11 and older).
The driver that comes with many CD drives is for DOS mode only.
What you may need, is and update to the IDE bus-master driver from ASUS.
Did you remove the old drives from device manager before installing the new drives?
If not, Windows may still be looking for the old drives.
You should also check Autoexec.bat, and config.sys in-case someone installed the DOS driver for the old drives.
One trick that often works in W2K, is to delete the IDE controllers from device manager. (all 3)
Re-boot, and Windows usually re-installs everything properly, and your CD drive is now properly recognized.
Chas