I hope this helps a tad:
DreamHost XMPP wiki http://bit.ly/VIN4ep
As far as the a few of the different features, I was able to find those here http://jabberd.org/ You can read through the official site for the package and see if the documentation has what you are looking for. Also, if you have a specific question about a particular feature, please let us know! Click here http://bit.ly/PfpbbY for get some help from our support Dream Team.