OpenGroupware

I'm trying to install OpenGroupware ( http://www.opengroupware.org) in our RHEL AS3.0 server. Things seems very difficult in that. Apache and postgre are the prerequestics for that. those softwares was not in mine. so, i forced to install those things also. these time i found manu dependency and version problems. They didn't tell clear about their software installation. Since it is alpha version, i know we can't expect perfect documentation for that. Atlast i finished all these. but the file to start the ogo is missing. what to do?. This installation irritated me lot. I also subscribed to the user groups.but , responses is not much as TOAD. Any way now i'm intrested to see the the welcome screen of that application...