Forum OpenACS Development: Re: Strange character issue on old OACS Site
if the plan is to upgrade the instance to some future-safe version (recent versions of Tcl, PostgreSQL, security fixes, etc.), It is recommended to use NaviServer instead of AOLserver. One can get a recent version of OpenACS with NaviServer with  compiled on many Unix versions. This install-script gives you at least proper binaries and a config file for OpenACS with NaviServer that can be usually quickly adjusted to local needs.
all the best