We realized that installing SABnzbd on a VPS may not be obvious, so we made the guide in the link below hoping that someone may find it useful. Documentation for installing SABnzbd on CentOS6 is sparse, so we tried to add as much detail to the guide as possible so that even linux newbies should be able to figure it out. Although we wrote the guide for installation on a VPS, it should still be valid for local installations. In fact, it'll even be easier for you. If there are any errors, omissions, please let me know and I'll update the guide.
How to install SABznbd on CentOS 6 on a VPS
http://hippowise.com/how-to-install-sab ... cent-os-6/