6.2? Why are you running 6.2???
CentOS 6 is up to 6.6, 6.2 is from years ago and is horrifically out of date. Do a yum update (may need several) and bring that system up to date. For that matter, 99% of the software you might need is also available via yum. You may need to bring in a 3rd party repo or two, but it's rare that you would find a piece of software that's available as a CentOS 6 rpm, that isn't available in a repo via yum. If it's not available in a repo, chances are you need to build it from source.