after using eth00 installation guide for yum ( some RPM links were broken ) i have error near YUM command:
i've RHEL4,

CODE
[root@irongate ~]# yum

[B]Warning, could not load sqlite, falling back to pickle

You need to give some command[/B]



usage: yum [options] < update | install | info | remove | list |

   clean | provides | search | check-update | groupinstall |

   groupupdate | grouplist | groupinfo | groupremove |

   makecache | localinstall | erase | upgrade | whatprovides |

   localupdate | resolvedep | shell | deplist >



CODE
[root@irongate ~]# yum update kernel

Warning, could not load sqlite, falling back to pickle

Setting up Update Process

Setting up repositories

not using ftp, http[s], or file for repos, skipping - Null is not a valid release or hasnt been released yet

Cannot find a valid baseurl for repo: update

Error: Cannot find a valid baseurl for repo: update


i've installed python-sqlite and sqlite.

how to fix this ?