[Zope] Problem Building 2.10.x

Hi; I'm trying to build 2.10.x on a CentOS 5.4 server. I get the error that I need to upgrade my Python from 2.4.3 to (I believe) 2.4.6. The problem is that I really can't do that using rpms unless I roll my own. Before doing that I wanted to consult you all and ask your advice. TIA, Susan PS Another option would be to build this on my Mac, but it doesn't look like Zope supports that platform.