yum fail , cant upgarde interworx udner fc1

yum update
Gathering header information file(s) from server(s)
Server: Fedora Core 1 - Base
retrygrab() failed for:
Executing failover method
failover: out of servers to try
Error getting file http://updates.interworx.info/fedora/core/1/i386/os/headers/header.info
[Errno 4] IOError: HTTP Error 404: Not Found

http://updates.interworx.info/fedora/core/1/ its empty
whats up?

Sombody can telme how fix this?