Centos x86_64

[Christoph Kaulich]

Hello, 

I just try to setup a Centos x86_64 system, on the web I found the note:

Note to x86_64 users: You may have to enable both x86_64 and i386 repos. 

How can I set this up with keeping the mirrorlist feature working, I only 
found the way to add a new repo like:

[kde_i386]
name=kde_386
baseurl=http://mirror.unl.edu/kde-redhat/centos/5.3/i386/stable/
#mirrorlist=http://apt.kde-redhat.org/apt/kde-redhat/redhat/mirrors-stable
gpgkey=http://apt.kde-redhat.org/apt/kde-redhat/kde-redhat.RPM-GPG-KEY
#gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-kde-redhat
enabled=1


Thanks

Christoph