I think you're also forgetting you need an install guide for Subversion! since Trac provides the project management aspect for it.
I've managed to install Subversion, old version though, on a Pre4 SME7 box and works well with Tortoise SVN. However, setting up Trac I've managed to use the tracd daemon to provide the Web frontend but not tie it to the Apache process.
Would be interesting if any one could shed some light on this?
I would presume creating a custom file in /etc/httpd/conf.d/trac.conf creating a virtualhost directive would help? add a trac aliase for cgi-bin etc, etc.
I might take another stab at it later this week.
Dan Scannell
www.i4tech.co.uk