OpenACS 3.2.5 includes all the standard modules by default. Not all of them are fully configured 'out of the box', but they are all installed when you install OpenACS 3.2.5.
After fixing your security problems, I'd suggest reading carefully through the OpenACS Installation Guide and the OpenACS Getting Started Guide. Both should have been installed with your OpenACS 3.2.5 software, under /doc/openacs/, or in your case
http://www.edwinx.com/doc/openacs/
Perhaps the most common and useful module to get started with would be bboard, the module which creates forums like this one. Try
http://www.edwinx.com/admin/bboard/ and add a new topic to get started.
