Upgrade to CentOS 6.3 from CentOS 6.2/6.1/6.0

I am running CentOS 6.0

Are these instructions good enough with ISPConfig 3? Or do I need something more.

http://www.if-not-true-then-false.com/2011/upgrade-centos-6//

Thanks

 

It *should* work, however, you better create backups of all important data before you do this.