Ridiculously long set of instructions on how to get Gitorious running on CentOS 5.6 64-bit. The vast majority of these instructions are copied from http://famousphil.com/blog/2011/06/installing-gitorious-on-centos-5-6-x64/
Before applying these instructions, do yourself a favor and search and replace for the following:
<hostname.domain>
<mysqladminpassword>
<admin email>
<gitmysqlpassword>
<country>
<state>
<city>
<company>
<gitoriousadminpassword>