I have tested the installation on CentOS 6.2 and Oracle Linux 6.3 VM's, from my personal experience Oracle Linux 6.3 installation is simplest of all.
Prerequisites:
Make sure you have installed IHS and Websphere 7.0.0.25 runtime environment before proceeding with WCS installation, you may refer my previous blogs for these steps
IHS 7.0.0.25 installation
http://techhari.blogspot.com/2013/01/ibm-http-server-v7-instalaltion-on.html
WAS 7.0.0.25 installation
http://techhari.blogspot.com/2013/01/was-7-installation-on-centos-62-or.html
WCS Feature Pack 5 and Fix Pack 6 installation
https://docs.google.com/document/d/1snA1VxHTgi8MZ06cQp6Jg34NvVqG6A9WI0HLVUnrBxM/edit
Prerequisites:
Make sure you have installed IHS and Websphere 7.0.0.25 runtime environment before proceeding with WCS installation, you may refer my previous blogs for these steps
IHS 7.0.0.25 installation
http://techhari.blogspot.com/2013/01/ibm-http-server-v7-instalaltion-on.html
WAS 7.0.0.25 installation
http://techhari.blogspot.com/2013/01/was-7-installation-on-centos-62-or.html
WCS Feature Pack 5 and Fix Pack 6 installation
https://docs.google.com/document/d/1snA1VxHTgi8MZ06cQp6Jg34NvVqG6A9WI0HLVUnrBxM/edit
