diff -uNr anaconda-11.1.2.195__orig/installclasses/rhel.py anaconda-11.1.2.195/installclasses/rhel.py
--- anaconda-11.1.2.195__orig/installclasses/rhel.py	2009-09-28 22:49:11.000000000 +0000
+++ anaconda-11.1.2.195/installclasses/rhel.py	2009-09-28 22:51:14.000000000 +0000
@@ -14,6 +14,8 @@
 import logging
 log = logging.getLogger("anaconda")
 
+import rpmUtils.arch
+
 # custom installs are easy :-)
 class InstallClass(BaseInstallClass):
     # name has underscore used for mnemonics, strip if you dont need it
@@ -57,6 +59,10 @@
     skipkeytext = N_("If you cannot locate the Installation Number, consult "
                      "http://www.redhat.com/InstNum/")
 
+    repos = { 
+             "Packages from CentOS Extras": (None, "http://mirrorlist.centos.org/?release=5&arch=%s&repo=extras" %(rpmUtils.arch.getBaseArch() )) }
+
+
     def setInstallData(self, anaconda):
 	BaseInstallClass.setInstallData(self, anaconda)
         BaseInstallClass.setDefaultPartitioning(self, anaconda.id.partitions,