The installation on the server is crazy easy. Move the .war file to the /opt/openfire/plugins directory and restart openfire. Go to a web browser, enter: <your server ip>:7070/redfire. That will bring up a console specifically for redfire. There are some settings there you can tweak, but, for the most part that will indicate that it's running and provide some test links to test across the network.
The issue that I ran into doesn't seem to be documented really well (or I'm blind/retarded, which is quite possible) is that configuration file that you should prep and the locations that it should be saved. Create a file called red5.properties. In that file you want to include the following:
server=<server IP>
port=7070
popup=true
protocol:=http://
I just filled in the server IP and the rest stayed the same. If anyone else has any in-depth knowledge on what the "protocol" function does, I'm all ears.
Now, save that file in the following folders on the machine you want to video conference from:
%homepath%\spark
%APPDATA%\Spark\plugins\redfire-plugin
and save a copy of the redfire-plugin.jar (which you can download from this site) to:
%PROGRAMFILES%\spark\plugins or, if you are running 64-bit, plop it in the (x86) program files directory.
the final step is to make sure that you have the latest Java installed (there are some reports that flash is required as well, so may as well load that on the client machine too).
Let me know if you get stuck from there.