I'm presuming your PCI card is a SIL card?
Isn't the CD-ROM parallel?
If it is, plug the CD-ROM into one of the on-board IDE connectors, making sure that it is enabled in the startup menu (press any key whilst booting).
Make sure you tell the XE to boot from on-board CD-ROM and make sure the SATA HD is selected in that boot menu, too
Hope this helps,
Fred