the other thread i was posting this to was locked, so i guess i'll continue it here.
typhy, instructions can be found in the same thread as the download:
hereas for finding where to change the addy. open the preferences window. there are tabs along the top. the second tab from the left is for server. the top line is the server addy. change it to 'xrup.com'. leave the port number alone (3278).
like i said before, this is only meant as a backup for gameranger, but it will be up full time, since you never know when gr will go down. so feel free to use it.