Java and Redhat

[Eugene Teh]

Hi, 

        It's said that you need 
        
        1.glibc-2.0.7-7 
        2.glibc-devel-2.0.7-7 

        to install jdk1.1.6. 

but Redhat5.0 does not allow the installation of (2) 
How does one upgrade the Redhat OS from 5.0 to 5.1? 
This is really frustrating as I searched the whole website to no avail. 
I am definitely not going to reinstall everything

Eugene Teh