Hey hey, allow me to help both of you out.
For this particular game, add this to a copy of your dom3 shortcut:
-C --ipadr Arsnotoria.net --port 10448
Beyond that, go to the main forum and look towards the top, there is a thread devoted to all the command line switches. Be sure to check that for any other options you may want added to the shortcut.
Baalz beat me to it
