Make sure the BIOS is configured correctly. It should be set to boot from the CD or floppy.
If CD won't work you can get the XP bootdisks from the same website. The floppy you are using might be corrupted. You can try get a new one.
TheMajorMMX - Intel P200 MMX @ 225Mhz - V-Tech (PcPartner) Baby-AT mb w/ Intel Triton TX chipset - Nvidia Riva TNT2 M64 w/ 16MB - 256MB M-Tec SDRAM - Still running.....